The Ring of Milesius: Official Seal of the International O'Sullivan Clan
The International O'Sullivan Clan is recognized by Finte na hÉireann ~ Clans of Ireland, the official representative organization of Irish Clans to the Government of Ireland, the United Nations, and the Standing Council of Scottish Chiefs. To visit the Finte na hÉireann ~ Clans of Ireland web page please click on the logo below.
The O'Sullivan Clan of Munster has been a member in good standing of the Clans of Ireland since 2011.
Finte na hÉireann ~ Clans of Ireland is an independent permanent authority established in 1989 to:
Authenticate and register Irish Clans and historical families
promote the interests of Irish Clans and historical families
provide authentic and scholarly information related to Irish Clans and historical families.
They are regularly consulted by government agencies, embassies, historical and cultural groups, the media and members of the general public. We maintain a very strong and positive relationship with the Standing Council of Irish Chiefs and Chieftains who represent the hereditary Chiefs.
Membership of Clans of Ireland is restricted to those Irish Clans and historical families who's surname is of Irish origin or who have a presence in Ireland prior to the Great Famine (1845-1862). As such the Register of Clans of Ireland includes families of Irish, Norse, Anglo-Norman, Scots, Gallowglass, Huguenot, and Quaker origins.
The Patron of Clans of Ireland is Michael D. Higgins, President of Ireland.
Excellent New Book on the O'Sullivan Clan Recently Published! Click on book to purchase.
This superb genealogical and historical account traces the O'Sullivan sept a full thirty-one generations from the author’s Carolina origins to the family’s Irish roots in 170 AD. Mr. McCreight demonstrates that the O'Sullivans may be the oldest documented royal family on record, based on examinations of archaeological, linguistic, and DNA evidence. Little wonder that esteemed genealogist Brian Mitchell callsO'Sullivan "a phenomenal piece of research and wide-ranging discussion into the origins of a very significant Irish family and in the process a well-illustrated history of Ireland."
O'Sullivan. The Earliest Irish Royal Family: History and Genealogy traces six O’Sullivan lines, from the first person called Sullivan, to France, Spain, and America. Mr. McCreight sets the stage for his genealogies with a lavishly illustrated historical essay that places the O’Sullivan fortunes and misfortunes in historical context. At their height in Ireland, the O’Sullivans controlled hundreds of thousands of acres and occupied thirty-two castles, principally in Counties Kerry and Cork. Like many of their counterparts who resisted the English invasions under Queen Elizabeth, Oliver Cromwell and the Stuarts, most of the O’Sullivans expatriated to France, Spain, and America. One such was Donal Cam O'Sullivan Beare, whose epic march to Leitrim Castle in 1603 is traced in detail and whose family ultimately escaped to Spain. One French O'Sullivan descendant of the family was Patrice MacMahon, Duke of Magenta, second president of the Third French Republic. The author's earliest American forebear arrived in Virginia from Ireland in 1655. A 19th-century ancestor fought on the Confederate side of the Civil War, and Mr. McCreight’s immediate forebears operated a number of hotels in South Carolina. Full of colorful personalities and extraordinary photos of the Irish countryside and ancient relics, O'Sullivan. The Earliest Irish Royal Family: History and Genealogy will captivate students of Irish history and Sullivan descendants alike.
Welcome to the International O'Sullivan Clan, the most senior tribe of the royal Eoghanacht.
Please explore our site and discover the O'Sullivan tartan, the O'Sullivan battleflag, the O'Sullivan flower (the Blackthorn Rose), the O'Sullivan planxty, the armorial shield of the O'Sullivan Mor, the sundry O'Sullivan keeps and castles, the main O'Sullivan genealogical line, and links to available resources that highlight O'Sullivan history.
Please visit theClan Registrypage to register as a clan member.
Dunderry Castle in Spring.
The International O'Sullivan Clan, Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018.