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Ó Flaithbertaigh

O'Flaherty
Ó Flaithbheartaigh
O'Flaherty arms
Country Kingdom of Connacht
Parent house Connachta (Uí Briúin Seóla)
Titles
Founder Flaithbheartach mac Eimhin
Final ruler Domnell Crone Ó Flaithbheartaigh
Cadet branches Hughes of Galway

O'Flaherty (Middle Irish: Ó Flaithbheartaigh; Modern Irish: Ó Flaithearta), is an Irish Gaelic clan based most prominently in what is today County Galway. The clan name originated in the 10th century as a derivative of its founder Flaithbheartach mac Eimhin. They descend in the paternal line from the Connachta's Uí Briúin Seóla. They were originally kings of Maigh Seóla and Muintir Murchada and as members of the Uí Briúin were kinsmen of the Ó Conchubhair and Mac Diarmada amongst others. After their king Cathal mac Tigernán lost out to Áed in Gai Bernaig in the 11th century, the family were pushed further West to Iar Connacht, a territory associated with Connemara today. They continued to rule this land until the 16th century.

This Gaelic-Irish surname is written as "Ua Flaithbertach" (nominative) or "Ua Flaithbertaig" (genitive) in Old Irish and Middle Irish texts. In Modern Irish the surname is now generally spelt as Ó Flatharta.

The surname is commonly translated as "bright ruler" or more correctly "bright prince", flaith originally meaning prince in Irish. "O" or Ó comes from Ua, designating "grandson" or "descendant" of a (major) clan member. The prefix is often anglicised to O', using an apostrophe instead of the Irish síneadh fada: "'".

Maigh Seóla was the earliest O'Flaherty domain, to the east of Lough Corrib in the kingdom of Connacht, the western most province of the Island of Ireland (Irish: Éire).


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