O'Flaherty 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. The name has been alternatively rendered into English in various forms, such as Flaherty, Fluharty, Faherty, Laverty, Flaverty, Lahiff, and Flahive.
Annaghdown is a civil parish in County Galway, Ireland. It takes its name from Eanach Dhúin, Irish for "the marsh of the fort". It lies around Annaghdown Bay, an inlet of Lough Corrib. Villages in the civil parish include Corrandulla and Currandrum. Annaghdown is also an ecclesiastical parish in the Roman Catholic Archdiocese of Tuam and the Church of Ireland Diocese of Tuam, Killala and Achonry.
Uí Díarmata was a local kingdom located in what is now north County Galway.
Muireadhach Ua Dubhthaigh was an Archbishop of Connacht, in Ireland.
Uilliam Ó Cormacáina, Archbishop of Tuam 5 May 1386 – 1393.
Muirchertach Ua Carmacáin, Bishop of Clonfert, 1195-1203.
Domnall Ua Finn, Bishop of Clonfert.
Ímar Ua Ruaidín was Bishop of Kilmacduagh.
Mac Gilla Cellaig Ua Ruaidín was Bishop of Kilmacduagh.
Gilla Cellaig Ó Ruaidín, aka Gilbert Ó Ruane, Bishop of Kilmacduagh, died 1204.
Nicol Ó Leaáin, Bishop of Kilmacduagh 1358–1393. Ó Leaáin is associated with the Oranmore-Clarenbridge are of County Galway.
Máel Muire Ó Connaig, Bishop of Kilmacduagh, died 1224.
Gilbert Ó Tigernaig was the Bishop of Annaghdown from 1306 to 1323.
Jacobus Ó Cethernaig, aka James O'Kearney was Bishop of Annaghdown during 1323–1324 and Bishop of Connor during 1324–1351.
Tomas Ó Mellaig, Bishop of Annaghdown, died after 27 May 1250.
Tomás Ó Mellaig, Bishop-elect of Annaghdown, fl. 1329.
Murchad Ua Flaithbertaig was Bishop of Annaghdown c. 1202-1241.
Conchobar Ó Muirdaig was Bishop of Kilmacduagh.
Mór Ní Briain was Queen of Connacht, and died 1218. She was a daughter of King Domnall Mór Ua Briain of Thomond. Domnall's wife was Órlaith Ní Murchadha, Princess of Leinster, daughter of Queen Mor Ui Thuathail and King Diarmaid Mac Murchadha of Leinster.
Tomás Ó Con Cheanainn was an Irish scholar and historian.
