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Lamh Foistenach Abu.........................................................................................................

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The O'Sullivan Genealogy

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There are four major branches of Milesian Celts, all claiming 

descent from one of the surviving royal Gaelic invaders that 

conquered the Tuatha de Danan: Heber, Heremon, Ir (sons 

of Milesius), and Ithe (uncle of Milesius). 


The Heberians (major clans in bold)

[to review the complete Heberian genealogy scroll below]

O’Sullivan (the main line of the Milesian Celts, the most senior clan)

MacCarthy (descend from Failbhe Flann, younger brother of Finghin [81]

Brady of County Clare (descend from a cadet branch of the O’Grady clan)

Carroll (descend from a cadet branch of the O’Carroll clan)

Casey (descend from a cadet branch of the O’Carroll clan)

Clancy (descend from a cadet branch of the Macnamara clan)

Coghlan (descend from a cadet branch of the O’Brien clan)

Connell (descend from a cadet branch of the MacCarthy clan)

Conroy (descend from a cadet branch of the O’Brien clan)

Cormac (descend from a cadet branch of the MacCarthy clan)

Cullen (descend from a cadet branch of the Keely clan)

Curry (descend from a cadet branch of the Coghlan clan)

Dallan (descend from a cadet branch of the Lyons clan)

Doran (descend from a cadet branch of the O’Sullivan Vera)

Durkin (descend from a cadet branch of the Macnamara clan)

Eark (descend from a cadet branch of the O’Connell clan)

Eustace (descend from a cadet branch of the O’Brien clan)

Hagerty (descend from a cadet branch of the MacCarthy clan)

Hally (descend from a cadet branch of the O’Kennedy Munster clan)

Haly (descend from a cadet branch of the O’Brien clan)

Hanrahan (descend from a cadet branch of the O’Brien clan)

Heffernan (descend from a cadet branch of the O’Brien clan)

Hehir (descend from a cadet branch of the O’Brien clan)

Hickey (descend from a cadet branch of the Macnamara clan)

Hogan (descend from a cadet branch of the O’Brien clan)

Kearney (descend from a cadet branch of the O’Brien clan)

Keely (descend from a cadet branch of the O’Donovan clan)

Kelleher (descend from a cadet branch of the O’Brien clan)

Kennedy Munster (descend from a cadet branch of the O’Brien clan)

Lawson (descend from a cadet branch of the the O’Sullivan Beara)

Loughnan (descend from a cadet branch of the O’Carroll Ely clan)

Lynch (descend from a cadet branch of the O’Brien clan)

Lyons (descend from Main Mun-chain, younger brother of Lughaidh [74])

Lysaght (descend from a cadet branch of the O’Brien clan)

Macauliffe (descend from a cadet branch of the MacCarthy clan)

MacBrody (descend from a cadet branch of the O’Brien clan)

McCartney (descend from a cadet branch of the MacCarthy clan)

MacDonogh-Cartie (descend from a cadet branch of the MacCarthy clan)

MacClancy (descend from a cadet branch of the Macnamara clan)

MacCoghlan (descend from a cadet branch of the O’Brien clan)

MacCrohan (descend from a cadet branch of the O’Sullivan clan)

MacElligott (descend from a cadet branch of the O’Sullivan McGillicuddy)

MacEniry (descend from a cadet branch of the O’Donovan clan)

MacGillicuddy (descend from a cadet branch of the O’Sullivan clan)

MacGrath (some O’Sullivan MacCragh now known as McGrath)

MacMahon (descend from a cadet branch of the O’Brien clan)

MacNamara (descend from a cadet branch of the O’Brien clan)

Moloney (descend from a cadet branch of the O’Brien clan)

Moriarty (descend from Cairbre Luachra, younger brother of Nathfraoch [76])

O’Brien (descend from Cas, a younger brother of Eoghan Mor II [71])

O’Callaghan (descend from a cadet branch of the MacCarthy clan)

O’Carroll Ely (descend from Cian, youngest brother of Eoghan Mor II [71])

O’Collins (descend from a cadet branch of the O’Connell clan)

O’Connell (descend from Daire Cearb, younger brother of Lughaidh [74])

O’Connor (descend from a cadet branch of the O’Carroll Ely clan)

O’Corcoran (descend from a cadet branch of the O’Carroll Ely clan)

O’Cronan (descend from Carbery, youngest brother of Finghin [81])

O’Cullen (descend from Eochaidh, younger brother of Nathfraoch [76])

O’Daly (descend from Eanna, younger brother of Felim [78])

O’Dea (descend from a cadet branch of the O’Brien clan)

O’Donoghue (descend from Cas, younger brother of Nathfraoch [76])

O’Donovan (descend from Daire Cearb, younger brother of Lughaidh [74])

O’Flanagan (descend from a cadet branch of the O’Carroll Ely clan)

O’Gara (descend from a cadet branch of the O’Hara clan)

O’Grady (descend from a cadet branch of the Macnamara clan)

O’Gunning (descend from a cadet branch of the O’Brien clan)

O’Hara (descend from a cadet branch of the O’Carroll Ely clan)

O’Hea (descend from a cadet branch of the O’Brien clan)

O’Hogan (descend from a cadet branch of the O’Brien clan)

O’Hurley (descend from a cadet branch of the O’Brien clan)

O’Keefe (descend from Eochaidh Areamh, younger brother of Felim [78])

O’Kelleher (descend from a cadet branch of the O’Brien clan)

O’Kennedy Munster (descend from a cadet branch of the O’Brien clan)

O’Leary (descend from a cadet branch of the O’Connell Ely clan)

O’Lenehan (descend from a cadet branch of the MacEniry clan

O’Liddy (descend from a cadet branch of the O’Brien clan)

O’Lonergan (descend from a cadet branch of the O’Brien clan)

O’Lynch (descend from a cadet branch of the O’Brien clan)

O’Mahony (descend from a cadet branch of the O’Donoghue clan)

O’Meagher (descend from a cadet branch of the O’Carroll Ely clan)

O’Meara (descend from a cadet branch of the O’Brien clan)

O’Moroney (descend from a cadet branch of the O’Connor clan)

O’Neill of County Clare (descend from a cadet branch of the O’Brien clan)

Padden (descend from a cadet branch of the O’Brien clan)

Penfeather (descend from a cadet branch of the O’Sullivan Vera)

Plunkett (descend from a cadet branch of the O’Brien clan)

Quaile (descend from a cadet branch of the O’Sullivan Vera)

Quin of Dunraven (descend from a cadet branch of the O’Brien clan)

Ring (descend from Daire Cearb, younger brother of Lughaidh [74])

Roughan (descend from a cadet branch of the O’Dea clan)

Shannon (descend from a cadet branch of the Kennedy clan)

Sheedy (descend from a cadet branch of the Macnamara clan)

Slattery (descend from a cadet branch of the Hickey clan)

Spellan (descend from a cadet branch of the O’Brien clan)

Tavney (descend from a cadet branch of the O’Connell clan)

Tracey of Munster (descend from a cadet branch of the O’Donovan clan)

 

The Heremonians

Allen                                                                                                              

Baker                                                                                                     

Barnewall                                                                                                     

Beatty                                                                                                           

Binney                                                                                                           

Birch                                                                                                     

Boland                                                                                                         

Boyle                                                                                                       

Brady                                                                                                                                               

Brassil                                                                                                            

Breen                                                                                                         

Brenan                                                                                                 

Breslin                                                                                                           

Brody                                                                                                            

Burn                                                                                                       

Cahill                                                                                                            

Caine                                                                                                           

Cairns                                                                                                         

Callan                                                                                                       

Canavan                                                                                                      

Canon                                                                                                      

Carbery                                                                                                       

Carlton                                                                                                        

Carney                                                                                                   

Carroll                                                                                                          

Casey                                                                                                               

Coen                                                                                                        

Coleman                                                                                                     

Colgan                                                                                                         

Comyn                                                                                                  

Conan                                                                                                  

Concannon                                                                                         

Connellan                                                                                            

Conroy                                                                                                 

Conway                                                                                               

Cormack                                                                                              

Corrigan                                                                                                

Counihan                                                                                                    

Cowell                                                                                                             

Cox                                                                                                               

Crean                                                                                                       

Crowley                                                                                                   

Cumin                                                                                                        

Daly                                                                                                              

Darcy                                                                                                  

Davidson                                                                                                     

Davin                                                                                                   

Dempsey                                                                                                      

Devin                                                                                                         

Dillon                                                                                                       

Dinan                                                                                                       

Doherty                                                                                                 

Dolan                                                                                                       

Donelan                                                                                                  

Don-Levi                                                                                                  

Donellan                                                                                                  

Donnelly                                                                                                  

Dowling                                                                                                 

Doyne                                                                                                           

Duffe                                                                                                         

Duffeny                                                                                                        

Duffy                                                                                                         

Duignan                                                                                                  

Donegan                                                                                               

Dunlevy                                                                                                    

Dunkin                                                                                                       

Dunne                                                                                                          

Dwyer                                                                                              

O’Conor-Eccles                                                                                   

Edmundson                                                                                                 

Egan                                                                                                             

Fahy                                                                                                         

Fallon                                                                                                           

Falvey                                                                                                         

Feehan                                                                                                      

Felan                                                                                                    

Ferguson                                                                                                 

Fihilly                                                                                                     

Finaghty                                                                                                     

Flanagan                                                                                                        

Flinn                                                                                                             

Flood                                                                                                         

Fogarty                                                                                                          

Foran                                                                                                   

Forbes                                                                                                            

Fox                                                                                                                  

Foy                                                                                                         

Frend                                                                                                       

Gafney                                                                                                        

Gahan                                                                                                      

Gallagher                                                                                                   

Galwey                                                                                                    

Garvaly                                                                                                       

Garvey                                                                                                         

Gavan                                                                                                          

Gawley                                                                                                     

Geraghty                                                                                                  

Gillon                                                                                                    

Gilmartin                                                                                                    

Griffin                                                                                                   

Grimley                                                                                                     

Guthrie                                                                                                        

Gware                                                                                                     

Hanly                                                                                                     

Hanraghan                                                                                             

Hardiman                                                                                                      

Hart                                                                                                             

Henry                                                                                                       

Higgins                                                                                                    

Holahan                                                                                                 

Hoolahan                                                                                                   

Hughes                                                                                                  

Hynes                                                                                                           

Kane                                                                                                       

Kavanagh                                                                                                    

Keane                                                                                                     

Keary                                                                                                         

Keenan                                                                                                        

Kelly                                                                                                    

Kennedy-Tirowen                                                                                       

Keogh                                                                                                             

Kett                                                                                                           

Kiernan                                                                                                     

Kilbride                                                                                                    

Kilkelly                                                                                                      

Kinsella                                                                                                         

Kirwan                                                                                                        

Laffan                                                                                                            

Lane                                                                                                            

Larkin                                                                                                           

Lavan                                                                                                         

Lawlor                                                                                                               

Lee                                                                                                            

Lemon                                                                                                      

Leonard                                                                                                   

Loftus                                                                                                        

Logan                                                                                                          

Longan                                                                                                   

Lynch                                                                                                 

MacAnaspie                                                                                              

Macaulay                                                                                               

MacBrady                                                                                            

MacBrennan                                                                                       

MacDermot                                                                                        

MacDonagh                                                                                         

MacDonald                                                                                         

MacDonnell                                                                                         

MacDowall                                                                                        

MacFetridge                                                                                  

MacGeoghagan                                                                                  

MacGillcunny                                                                                    

MacGillfinen                                                                                             

MacHale                                                                                                

MacHugh                                                                                               

MacKenna                                                                                         

MacLaughlan                                                                                           

MacLeigh                                                                                            

MacMahon                                                                                           

MacManus                                                                                       

MacMorough                                                                                       

MacNamee                                                                                            

Maconky                                                                                             

MacSheehy                                                                                           

MacSweeny                                                                                         

MacTiernan                                                                                              

MacUais                                                                                                

McVeigh                                                                                           

MacVaddock                                                                                              

Madden                                                                                               

Magauran                                                                                              

McGovern                                                                                             

Magellan                                                                                                 

Magofrey                                                                                             

Magrath-Ulster                                                                                                      

Maguire                                                                                                       

Mahon                                                                                                       

Malone                                                                                                           

Maye                                                                                                           

Mayne                                                                                                     

McCann                                                                                                      

Michel                                                                                                      

Meehan                                                                                                        

Milmo                                                                                                       

Moghan                                                                                                      

Molloy                                                                                                        

Moody                                                                                                     

Mooney                                                                                                     

Morgan                                                                                               

Moriarty-Connaught                                                                                      

Morley                                                                                                          

Morris                                                                                                     

Muldoon                                                                                                 

Mulfinny                                                                                               

Mulheeran                                                                                                

Mullally                                                                                                      

Mullen                                                                                                  

Mulrennan                                                                                              

Mulroy                                                                                                   

Murray                                                                                                      

Naghten                                                                                                         

Nealan                                                                                                           

Night                                                                                                                

Nowlan                                                                                                        

Nolan                                                                                                      

O’Beirne                                                                                                     

O’Brick                                                                                              

O’Brien-Fermanagh                                                                                 

O’Byrne                                                                                                   

O’Cahan                                                                                                    

O’Clery                                                                                                         

O’Connor-Connaught                                                                       

O’Donel                                                                                               

O’Donnell                                                                                                

O’Dowd                                                                                               

O’Flaherty                                                                                                

O’Flanagan-Fermanagh                                                                           

O’Flynn                                                                                               

O’Gorman                                                                                               

O’Hagan                                                                                        

O’Halloran                                                                                            

O’Hanlon                                                                                                    

O’Hart                                                                                                       

O’Kelly                                                                                                    

O’Malley                                                                                                 

O’Mealla                                                                                            

O’Melaghlin                                                                                           

O’Murphy                                                                                          

O’Naughten                                                                                                   

O’Neill-Ulster                                                                                         

O’Neylon                                                                                                        

Ord                                                                                                           

O’Regan                                                                                                   

O’Reagan                                                                                            

O’Reilly                                                                                                      

O’Reehill                                                                                                

O’Rourke                                                                                      

O’Shaughnessy                                                                                          

O’Shea                                                                                                        

O’Shee                                                                                                    

O’Toole                                                                                                        

Quirk                                                                                                            

Reily                                                                                                                 

Roe                                                                                                              

Rogan                                                                                                    

Rogerson                                                                                                      

Ryan                                                                                                           

Scanlan                                                                                                        

Sheane                                                                                                  

Spillane                                                                                                          

Tatly                                                                                                           

Tierney                                                                                                        

Tighe                                                                                                             

Tully                                                                                                           

Whalen

 

The Irians

Cahill-Templemore                                                                              

Cawley-Connaught                                                                                     

Cronelly                                                                                                        

Curtin                                                                                                           

Dugan                                                                                                       

Duncan                                                                                                        

Farrell                                                                                                        

Guinness                                                                                                        

Healy                                                                                                          

Kilroy                                                                                                           

Leavy                                                                                                        

Leydon                                                                                                         

Lynch-Ulster                                                                                         

MacArtan                                                                                               

MacGarry                                                                                                 

Madigan                                                                                              

Manning                                                                                                    

Moledy                                                                                                       

Moore                                                                                                        

Moran                                                                                                      

Mulcahy                                                                                                    

Mulvey                                                                                                        

O’Connor-Kerry                                                                             

O’Loghlin-Clare                                                                                            

Quinn                                                                                                      

Reynolds                                                                                                    

Ruddy                                                                                                         

Shanly                                                                                                           

Ward

 

The Ithians

Anthony                                                                                                      

Barry                                                                                                           

Clancy                                                                                                          

Coffey                                                                                                    

Needham                                                                                              

Nicholson                                                                                               

O’Driscoll                                                                                               

O’Leary

 


The Heberian Main Genealogical Line

It is the ultimate goal of the International O'Sullivan Clan to eventually allow all O'Sullivans/Sullivans in the world to determine exactly where they fit in the following genealogy. We will hopefully reverse some of the devastating effects that war and famine have had on our culture. By combining conventional genealogical research with yDNA testing we should be able to identify where each sub-branch of the clan sprouts from the main stem. If the Milesian tradition is valid, which I personally believe it to be, then a clear family tree should emerge. The research of Riobard O'Dwyer has been invaluable to this end. That is why I have expended such time, effort, and resources to preserve and disseminate his work (see Annals of Beara). 

Clan members Shanna Sullivan Jones and Kathleen Sullivan Kerwin are presently creating a meaningful yDNA platform that should reveal significant genetic clusters to identify our various sub-branches. Some day we hope a simple cheek scrape test will reliably reveal to which O'Sullivan sept an individual belongs.

It is already known where certain sub-branches fit in the main stem. These sub-branches are listed in blue.


BC

c. 1461    Birth of Phoeniusa Farsaidh [1], king of Scythia

c. 1441    Birth of Niul [2], lord of Capacyront

c. 1421    Birth of Gaodhal [3], lord of Capacyront

c. 1396    Birth of Asruth [4], lord of Capacyront

c. 1371    Birth of Sruth [5], last lord of Capacyront

c. 1346    Birth of Heber Scut [6], king of Scythia

c. 1321    Birth of Beouman [7], king of Scythia

c. 1296    Birth of Ogaman [8], king of Scythia

c. 1271    Birth of Tait [9], last king of Scythia

c. 1246    Birth of Agnon [10], chief brigand of the Caspian Sea

c. 1221    Birth of Lamhfionn [11], last chief brigand of the Caspian Sea

c. 1196    Birth of Heber Glunfionn [12], king of Gothia

c. 1171    Birth of Agnon Fionn [13], king of Gothia

c. 1146    Birth of Febric Glas [14], king of Gothia

c. 1121    Birth of Nenuall [15], king of Gothia

c. 1101    Birth of Nuadhad [16], king of Gothia

c. 1081    Birth of Alladh [17], king of Gothia

c. 1061    Birth of Arcadh [18], king of Gothia

c. 1041    Birth of Deag [19], king of Gothia

c. 1021    Birth of Brath [20], last king of Gothia

c. 1001    Birth of Breoghan [21], king of Spain and Portugal

c.  981     Birth of Bile [22], king of Spain and Portugal

[Bile had a younger brother named Ithe, from whom descend the Ithian clans of Ireland. See above.]

c.  961    Birth of Milesius [23], last king of Spain and Portugal

c.  941    Birth of Heber Fionn [24], Joint Ard Ri of Ireland

[Heber was the oldest son of Milesius to survive the invasion of Ireland. He had a younger brother named Heremon, who also survived, from whom descend the Heremonian clans. An even younger brother named Ir was the first brother to die in the invasion, but he left an adult son named Heber Don, from whom descend the Irian clans. See above.]

c. 921      Birth of Conmaol [25], 12th Ard Ri of Ireland

c. 901      Birth of Eochaidh Faobhar Glas [26], 17th Ard Ri of Ireland

c. 881      Birth of Eanna Airgthach [27], 21st Ard Ri of Ireland

c. 861      Birth of Glas [28], king of Munster

c. 841      Birth of Ros [29], king of Munster

c. 821      Birth of Rotheachta [30], king of Munster

c. 801      Birth of Fearard [31], king of Munster

c. 781      Birth of Cas [32], king of Munster

c. 761      Birth of Munmoin [33], 25th Ard Ri of Ireland

c. 741      Birth of Fauldergoid [34], 26th Ard Ri of Ireland

c. 721      Birth of Cas Cedchaingnigh [35], king of Munster

c. 701      Birth of Failbhe Iolcorach [36], king of Munster

c. 681      Birth of Ronnach [37], king of Munster

c. 661      Birth of Rotheachta [38], 35th Ard Ri of Ireland

c. 641      Birth of Eliomh Ollfhionach [39], 36th Ard Ri of Ireland

c. 621      Birth of Art Imleach [40], 38th Ard Ri of Ireland

c. 596      Birth of Breas Rioghacta [41], 40th Ard Ri of Ireland

c. 571      Birth of Seidnae Innaridh [42], 43rd Ard Ri of Ireland

c. 546      Birth of Duach Fionn [43], 45th Ard Ri of Ireland

c. 521      Birth of Eanna Dearg [44], 47th Ard Ri of Ireland

c. 496      Birth of Lughaidh Iardhonn [45], 48th Ard Ri of Ireland

c. 471      Birth of Eochaidh Uaircheas [46], 50th Ard Ri of Ireland

c. 446      Birth of Lughaidh Laimhdhearg (Louis Red Hand) [47], 52nd Ard Ri of Ireland

c. 421      Birth of Art [48], 54th Ard Ri of Ireland

c. 396      Birth of Oilill Fionn [49], 56th Ard Ri of Ireland

c. 371      Birth of Eochaidh [50], 57th Ard Ri of Ireland

c. 346      Birth of Lughaidh Lagha [51], 60th Ard Ri of Ireland

c. 321      Birth of Reacht Righ-dearg [52], king of Munster

c. 296      Birth of Cobthach Caomh [53], king of Munster

c. 271      Birth of Moghcorb [54], 72nd Ard Ri of Ireland

c. 246      Birth of Fearcorb [55], 75th Ard Ri of Ireland

c. 221      Birth of Adhambra Foltcain [56], 78th Ard Ri of Ireland

c. 196      Birth of Niadhsedhaman [57], 83rd Ard Ri of Ireland

c. 171      Birth of Ionadmaor [58], 87th Ard Ri of Ireland

c. 146      Birth of Lughaidh Luaighne [59], 89th Ard Ri of Ireland

c. 121      Birth of Cairbre Lusgleathan [60], king of Munster

c. 96        Birth of Duach Dalladh Deadha [61], 91st Ard Ri of Ireland

c. 71        Birth of Eochaidh Garbh [62], king of Munster

c. 49        Birth of Muireadach Muchna [63], king of Munster

c. 29        Birth of Loich Mor [64], king of Munster

c. 9          Birth of Eanna Muncain [65], king of Munster

AD

c. 11        Birth of Corb Olum (Dearg Theine) [66], king of Munster

c. 42        Birth of Dearg [67], king of Munster

c. 73        Birth of Mogh Neid [68], king of Munster

c. 104      Birth of Eoghan Mór [69], Joint Ard Ri of Ireland

c. 135      Birth of Oilill Olum [70], king of Munster

c. 170      Birth of Eoghan Mór II [71], crown prince of Munster

c. 215      Birth of Fiachaidh Muilleathan [72], king of Munster

c. 260      Birth of Oilill Flann-Beag [73], king of Munster

c. 300      Birth of Lughaidh [74], king of Munster

c. 340      Birth of Corc [75], king of Munster, lord of Cashel

c. 380      Birth of Nathfraoch [76], crown prince of Munster

c. 420      Birth of Aonghus [77], king of Munster, lord of Cashel

c. 455      Birth of Felim [78], king of Munster, lord of Cashel

c. 495      Birth of Crimthann [79], crown prince of Munster

c. 535      Birth of Aodh Dubh [80], king of Munster, lord of Cashel

c. 571      Birth of Fínghin [81], last king of Munster, last lord of Cashel

[Upon the death of Finghin, his younger brother Failbhe Flann became king, according to the laws of tanistry. The illustrious McCarthy Clan descends from Failbhe Flann.]

c. 606      Birth of Seachnasagh [82], lord of Knockgraffon

c. 641      Birth of Fiachra na Gaircedh [83], lord of Knockgraffon

c. 674      Birth of Flann Noba [84], lord of Knockgraffon

c. 714      Birth of Dubhinracht [85], lord of Knockgraffon

c. 754      Birth of Morough [86], lord of Knockgraffon

c. 794      Birth of Moghtigern [87], lord of Knockgraffon

c. 834      Birth of Maolura [88], lord of Knockgraffon

c. 878      Birth of Eochaid (Suilleabhainn) [89]

The Clann Ui Súilleabháin

c. 914    Birth of Lorcan [90], lord of Knockgraffon (Span: 40 years)

c. 954    Birth of Buadhach Áth Cró [91], lord of Knockgraffon (Span: 40 years)

c. 994    Birth of Aodh [92], lord of Knockgraffon (Span: 40 years)

c. 1034  Birth of Cathal [93], lord of Knockgraffon (Span: 40 years)

c. 1074  Birth of Buadhach Ó Súilleabháin [94], lord of Knockgraffon (Span: 40 years) [First individual to use the surname, Ó Súilleabháin.] 

c. 1114  Birth of MacCraith [95], lord of Knockgraffon (Span: 40 years) [Died 1176 AD]

c. 1147  Birth of Donal Mór [96], last lord of Knockgraffon (Domhnall Mor of Carrig Finnihuighe). (Span: 33 years) (Died in 1214 AD at app. age of 67.)

c. 1182  Birth of Giolla Mochoda [97], (Span: 35 years) (Died 1214 AD at app. age of 32.) [Giolla Mochoda had a younger brother named Giolla na bhFlann from whom descends the O'Sullivan Beara sept. The Lawson family is a sub-branch of the Beara sept, descending from Lauras.]

 

 

The Ó Súilleabháin Mór

c. 1210  Birth of Dunlong [98], The Ó Súilleabháin Mór (Span: 36 years) 

c. 1248  Birth of Murtagh Mór [99], The Ó Súilleabháin Mór (Span: 38 years) Murtagh Mór [99] had a younger brother named Giolla Mochoda, from whom descends the Ó Súilleabháin Mhic Giolla Mochoda sept.]

c. 1273  Birth of Bernard [100], The Ó Súilleabháin Mór (Span: 25 years)

c. 1298 Birth of Buadach [101], The Ó Súilleabháin Mór (Span: 25 years)

c. 1326  Birth of Dunlong II [102], The Ó Súilleabháin Mór (Span: 28 years)

c. 1358  Birth of MeicRaith (Cragh) [103], The last Ó Súilleabháin Mór (Span: 32 years) [MeicRaith had a younger brother, Ruairi, from whom descend the “Ó Súilleabháin Mór Sept”.]

 

The Ó Súilleabháin MhicRaith

c. 1394  Birth of Donal [104], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1430  Birth of Conor [105], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1466  Birth of Eoin (Owen) [106], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1502  Birth of Buodach [107], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1538  Birth of Donogh (Dermot) [108], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1574  Birth of Conor [109], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1610  Birth of Eoin (Owen) [110], The Ó Súilleabháin MhicRaith (Span: 36 years)

c. 1646  Birth of Dermot [111], The Ó Súilleabháin MhicRaith (Span: 36 years)

                          


The Ó Súilleabháin Mór (MhicRaith)

c. 1682  Birth of Eoin (Owen / John) [112], The Ó Súilleabháin Mór (Span: 36 years) [Upon the death of 'The Ó Súilleabháin Mór' (MhicRuairi) in Tomies on April 16, 1754 AD, the official title, 'The Ó Súilleabháin Mór', reverted back to the descendants of MeicRaith.]

c. 1718  Birth of Dermot [113], The Ó Súilleabháin Mór (Span: 32 years) 

                          (Dermot [113] had a younger brother named Thomas Mac Grath of Glenaboy, Tallow, Co. Waterford.)  

c. 1749  Birth of Sean (Eoin / John) [114], The Ó Súilleabháin Mór [114] (Span: 31 years) 

c. 1770  Birth of Seamus [115], The Ó Súilleabháin Mór (Span: 21 years)

c. 1791  Birth of Muircheartach Mór I (Murtagh Cragh) [116], The Ó Súilleabháin Mór (Span: 21 years) *

1816  Birth of Muircheartach Mór II (Murtagh Crah) [117], The Ó Súilleabháin Mór (Span: 25 years)

1857  Birth of Muircheartach Mór III (Mortimer James) [118], The Ó Súilleabháin Mór (Span: 41 years)

1889 Birth of Donal Seosamh I (Daniel Joseph) [119], The Ó Súilleabháin Mór (Span: 32 years) (+)

1920  Birth of Donal Seosamh II (Daniel Joseph) [120], The Ó Súilleabháin Mór (Span: 31 years)

1949 Birth of Donal Seosamh III (Daniel Joseph) [121D], The Ó Súilleabháin Mór [2004 - 2014] (Span: 29 years)

1955  Birth of Garraí Eoin Brian Ó Súilleabháin MhicRaith (Gary) [121G], The Ó Súilleabháin Mór [2014 - Present] (Span: 35 years)

 

* A remarkably shorter generation span was noted in the eighteenth century for the Ó Súilleabháin Murts of Doire Chonaire and there are several historical explanations for this phenomenon. One reason for this unusual fecundity was the introduction of the potato to Irish agriculture. This novel food source could grow prolifically on marginal land, allowing for one acre of potatoes to feed a family of six, with each individual consuming over ten pounds per day. Furthermore, the potato skins served as excellent fodder for pigs. The potato was the only crop that contained all of the nutrients necessary to sustain life. A diet of potatoes, supplemented only with buttermilk and bacon, could keep a large family alive and healthy. The tragic loss of many newborns to malnutrition and disease was markedly reduced.

 

Another reason for this population boom was that, although the Penal Laws were still to be found in the statute books, by the middle of the eighteenth century they were no longer being strictly enforced. This easing of restrictions allowed for Irish Catholic tenants to be granted short leases on small plots of land. Consequently, young men and women felt more comfortable getting married at an earlier age, setting up a home, and having children. This resulted in the population of Ireland doubling to five million people during the eighteenth century.

(+) Donal Seosamh I (Daniel Joseph) [119] had an older brother named Padraig (Patrick) [119-P] who moved to San Francisco, California. Patrick had four sons, the youngest of which had male issue. Patrick's son, John [120-P-4], had a son named Ray [121-P-4-J-1], who had a son named Brady [122-P-4-J-1-R-1]. Both Ray and Brady serve on the Derbhfine of the clan.

 Note: Primogeniture, as recorded in An Leabhar Muimhneach (The Book of Munster), is documented to Dermot [111].  Two additional generations are identified in O’Donovan’s Ordinance Survey, Eoin/Owen (John Greath) [112] and Dermot (Darby a Sheáin) [113], the progenitors of the Ó Súilleabháin MhicRaith of Doire Chonaire (Derryconnery), both of whom are also recorded in the Account Books B & C of the Bantry House Collection of the University College Cork (Coláiste na hOllscoile Corcaigh), B. Estate Administration, 1. Rentals, 1.1 Ledgers, 440, 441; 1740 – 1775. Eoin/Owen (John Darby) [114], Seamus (James Crath) [115], and Muircheartach Mór I (Murty Crah) [116] are documented in the 1827 Tithe List for Doire Chonaire (Derryconnery). Muircheartach Mór I (Murty Cragh) [116] and Muircheartach Mór II (Mort Crath) [117] are listed in Griffiths Valuation for the Kilcasken Parish (1848 – 1864). Muircheartach Mór II (Mort Crath) [117], Muircheartach Mór III (Mortimer James) [118] and Daniel Joseph [119] are found in the church records for the parishes of Kilcasken and/or Adrigole, County Cork, Ireland. Daniel Joseph II [120] and all of his progeny were born in the United States and have American documentation. All dates are approximate before 1816. 

 The Documented Pedigree of the Ó Súilleabháin MhicRaith of Doire Chonaire

 
Eoin (Owen / John) Ó Súilleabháin MhicRaith [112]
Documentation for Eoin (Owen / John) (John Greath) Ó Súilleabháin MhicRaith (born c. 1682) was found in Account Books B & C of the Bantry House Collection of the University College Cork (Coláiste na hOllscoile Corcaigh), B. Estate Administration, 1. Rentals, 1.1 Ledgers, 440, 441; 1740 – 1775. He is also recorded in O’Donovan’s Ordnance Survey in a letter from Thomas O’Connor of Killarney, dated August 29, 1841, listing the genealogical line of the Ó Súilleabháin MhicRaith sept.
 
Dermot Ó Súilleabháin MhicRaith [113]
Documentation for Dermot (Darby a Sheáin) Ó Súilleabháin MhicRaith (born c. 1718) was also found in Account Book C of the Bantry House Collection. He is also recorded in O’Donovan’s Ordnance Survey in a letter from Thomas O’Connor of Killarney, dated August 29, 1841, listing the genealogical line of the Ó Súilleabháin MhicRaith sept.
 
Eoin (Owen / John) Ó Súilleabháin MhicRaith [114]
Documentation for Eoin/Owen (John Darby) Ó Súilleabháin MhicRaith (born c. 1749) was found in the 1827 Tithe List for Doire Chonaire where he is listed as John Darby (Eoin, son of Dermot).
 
Séamus Ó Súilleabháin MhicRaith [115]
Documentation for Séamus (James Crath) Ó Súilleabháin MhicRaith (born c.1770) was also found in the 1827 Tithe List for Doire Chonaire where he is listed as James Crath. James had two sons, Muircheartach [Murty Cragh (I)] and Dermot (Jerem), the two progenitors of the Ó Súilleabháin Murts and Ó Súilleabháin Jers of Doire Chonaire.
 
Muircheartach Mór Ó Súilleabháin MhicRaith I [116]
Documentation for Muircheartach Mór [Murty Cragh (I)] Ó Súilleabháin MhicRaith (born c. 1791) was also found in the 1827 Tithe List for Doire Chonaire where he is listed as Murty Cragh. He is an adult property owner, according to this document. His estimated birth year was 1791, making him about 36 years old at this time. He is also registered in the Adrigole Parish Records as the father of John McGrath, who was baptized in Doire Chonaire on March 16, 1834. Murty Cragh (I) was about 43 years old when John was born. The wife of Murty Cragh (I) is identified as Ellen Shanahan in the Adrigole Parish Records. Murty Cragh (I) was about 25 years old when he sired his oldest son, Muircheartach Mór [Mort Crath (II)] in 1816. Murty Cragh (I) is also listed in Griffith’s Valuation for Kilcasken Parish (1848 – 1864).
 
Muircheartach Mór Ó Súilleabháin MhicRaith II [117]
Documentation for Muircheartach Mór [Mort Crath (II)] Ó Súilleabháin MhicRaith (born 1816) was also found in the Adrigole Parish Records where his marriage to Mary Crath was recorded on May 4, 1841. He is listed as Mort Crath. He died on October 5, 1882 at the age of 66. He had suffered with stomach cancer for about one year prior to his death. His daughter-in-law, Catherine Sullivan (nee Daly) was present at his death. From this Kilcasken Parish Record obituary, we know that Mort Crath (II) was born in 1816. He is also listed in Griffith’s Valuation for Kilcasken Parish (1848 – 1864).
 
Muircheartach Mór Ó Súilleabháin MhicRaith III [118]
Documentation for Muircheartach Mór [Mortimor James (III)] Ó Súilleabháin MhicRaith (born 1857) is also found in the Kilcasken Parish Records. His birth is registered as July 6, 1857. He married Catherine Daly. He died on February 7, 1940. His youngest son Liam (Willie) was present at his death. Mortimor James (III) had three older siblings, all of whom died in childhood. Mary was born in 1847, known as “Black ‘47” since it was the worst year of An Gorta Mhóir (the Great Hunger). John was born in 1850 and Michael was born in 1854, which were still bleak years for the people of Doire Chonaire.
 
Donal Seosamh Ó Súilleabháin MhicRaith I [119]
Documentation for Donal Seosamh [Daniel Joseph (I)] Ó Súilleabháin MhicRaith (born 1889) is also found in the Kilcasken Parish Records. His birth is registered in the Civil Records as March 30, 1889 but Mr. O’Dwyer is certain that this date is wrong. His correct birthdate is February 9, 1889. He was baptized on February 10, 1889 by the Very Reverend Father John Mangan P.P., No. 498 in the Baptismal Book. His Godparents were Daniel Sullivan and Johanna Crowley. Daniel Joseph (I) had two older brothers: John, who died without issue in a lumberjack camp in Washington State, U.S.A., purportedly during an “axe fight”; and Patrick, whose youngest son, John, had a son named Ray, who had a son named Brady. Both Ray and Brady serve on the Derbhfine of the clan.
 
Donal Seosamh Ó Súilleabháin MhicRaith II [120]
Documentation for Donal Seosamh [Daniel Joseph (II)] Ó Súilleabháin MhicRaith (born 1920) is an American birth certificate. Birth Record # 983 filed in Manhattan, New York City, New York, January 6, 1921 documenting the live birth of Daniel Joseph (II) on December 28, 1920
 
Garraí Brian Ó Súilleabháin MhicRaith [121G]
Documentation for Garraí Brian [Gary Brian] Ó Súilleabháin MhicRaith (born 1955) is an American birth certificate.


The Ó Súilleabháin MhicRuairi:

Ruairi  Ó Súilleabháin MhicRaith [The Ó Súilleabháin Mór]  (Anglicized 'Roger') [MacR- 1] (Younger brother of MeicRaith [103]


Donal Ó Súilleabháin MhicRuairi [The Ó Súilleabháin Mór] [MacR- 2]


Donal Ó Súilleabháin MhicRuairi  [The Ó Súilleabháin Mór] [MacR- 3]


Eoghan Ó Súilleabháin MhicRuairi (Owen / Eoin / John)  [The Ó Súilleabháin Mór] [MacR- 4]

The Ó Súilleabháin Vera:                                                                        The Ó Súilleabháin Mór:


Dermod  Ó Súilleabháin Vera  [MacR-5 V]                                           Donal na Sgreadaidhe Ó Súilleabháin Mór [MacR-5 M]


Connor Ó Súilleabháin Vera  [MacR-6 V]                                              Donal of Dunkerron Ó Súilleabháin Mór [MacR-6 M] 


Donal  Ó Súilleabháin Vera  [MacR-7 V]                                               Owen Ó Súilleabháin Mór of Dunkerron (died 1623) [MacR-7 M]


Owen Ruadh  Ó Súilleabháin Vera  [MacR-8 V]                                  Donal Ó Súilleabháin Mór (died 1633) [MacR-8 M]


Owen Ó Súilleabháin Vera  of Cappanacusha  [MacR-9 V]             Owen Ó Súilleabháin Mór of Dunkerron Castle [MacR-9 M]

                                  [Both of the above individuals forfeited their estates in War of 1641 - 1652] 

                                                                                                                     Donal Ó Súilleabháin Mór (died c. 1699) [MacR-10 M]


                                                                                                                     Rory Ramhar Ó Súilleabháin Mór [MacR-11 M]


                                                                                                                     Donal Ó Súilleabháin Mór (died at Tomies 1762) [MacR-12 M]

[Upon the death of 'The Ó Súilleabháin Mór' (MhicRuairi) in Tomies on April 16, 1754, the official title, 'The Ó Súilleabháin Mór', reverted back to the descendants of MeicRaith.]


All 3 Volumes of Annals of Beara now available

Volume I:
This is the first of a comprehensive three volume set, representing an entire lifetime of work by the esteemed Irish genealogist, Riobard O'Dwyer. Volume I includes all of the parish records for Adrigole and Allihies on the peninsula of Beara, each carefully translated and transcribed for posterity. These water stained and sun bleached manuscripts were very close to becoming illegible when Mr. O'Dwyer single handedly saved their precious information for generations to come. The Annals of Beara is, without a doubt, the most important genealogical work of the O'Sullivan family and the other tribes of Beara.

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Volume II:
This is the second of a comprehensive three volume set, representing an entire lifetime of work by the esteemed Irish genealogist, Riobard O'Dwyer. Volume II includes all of the parish records for Bere Island and Eyeries on the peninsula of Beara, each carefully translated and transcribed for posterity. These water stained and sun bleached manuscripts were very close to becoming illegible when Mr. O'Dwyer single handedly saved their precious information for generations to come. The Annals of Beara is, without a doubt, the most important genealogical work of the O'Sullivan family and the other tribes of Beara.

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Volume III:
This is the third of a comprehensive three volume set, representing an entire lifetime of work by the esteemed Irish genealogist, Riobard O'Dwyer. Volume III includes all of the parish records for Castletownbere and Glengarriff on the peninsula of Beara, each carefully translated and transcribed for posterity. These water stained and sun bleached manuscripts were very close to becoming illegible when Mr. O'Dwyer single handedly saved their precious information for generations to come. The Annals of Beara is, without a doubt, the most important genealogical work of the O'Sullivan family and the other tribes of Beara. A brief history of the O'Sullivan clan written by Gary B. Sullivan is included at the end of Volume III.

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The leather-bound, heirloom version of The Oak and Serpent is now available. It is being sold at cost, with no profit added. Please click on this image to order.

The Oak and Serpent is a 718-page, comprehensive history of the O’Sullivan / Sullivan Clan, from its mythological origin as revealed in the ancient annals, through the Middle Ages, and up to the twenty-first century. A detailed history and genealogy of all the O’Sullivan sub-septs is provided, including the O’Sullivan Beare, the O’Sullivan Mór, the O’Sullivan McGillycuddy, and the O’Sullivan MhicRaith.

The definitive meaning of the name is revealed, as deciphered by Ireland’s leading experts in the Gaelic language. O’Sullivan heraldry is explained, the history of all 32 castles associated with the O’Sullivan clan is reviewed, and several legends peculiar to the O’Sullivan family are presented.

Information concerning the O’Sullivan Clan organization is shared with an invitation for everyone named O’Sullivan or Sullivan to join. The clan tartan, battle flag, song, and flower are discussed, and a thorough Clan Hall of Fame introduces the family’s celebrities.

The O’Sullivan / Sullivan yDNA Project is explained, along with its mission to identify to which O’Sullivan / Sullivan sub-sept everyone with the name belongs. 39 full color plates provide exquisite illustrations of the maps, arms, ancient dress, and regalia of the clan.

The Ó Súilleabháin family is the oldest recorded royal bloodline of western civilization. Its noble blood has christened the battlefields of the world for thousands of years. The family has produced paupers and kings, priests and pirates, and scientists and wizards. It has fought its many battles with both pen and sword. It has survived the hazards of prehistoric Europe; the Egyptian, Greek, and Roman empires; the Dark Ages; the plagues; the Vikings; the Anglo-Normans; the Cromwellian holocaust and its crippling aftermath; the potato famine (An Gorta Mór); and two world wars. The Ó Súilleabháin clan is known for its ability to adapt, and it enters the new millennium strong, intact, and poised to regain its ancestral power.

This heirloom edition is fully bound in rich black leather and embellished with Celtic knot-work gold stamping framing the Seal of Milesius, the official seal of the clan. The raised bands across the spine are distinctive of the classic bookmaker’s art. Colorful end leaves are reminiscent of fine Old-World editions. Coordinating headbands grace both ends of the spine and add strength. The acid-free leaves are smyth-sewn; their edges are gilded for additional protection and elegance. A permanent satin ribbon marker ensures easy reference.