Tomás mac Gilbert Ó Cellaigh, Bishop of Clonfert, died 1378.

Tomás was a son of a king

King

- Centers of population :* King, Ontario, CanadaIn USA:* King, Indiana* King, North Carolina* King, Lincoln County, Wisconsin* King, Waupaca County, Wisconsin* King County, Washington- Moving-image works :Television:...

 of Ui Maine, Gilbert Ó Cellaigh

Gilbert Ó Cellaigh

Gilbert Ó Cellaigh was King of Uí Maine and Chief of the Name.-References:* The Tribes and customs of bananas and Hy-Many, John O'Donovan, 1843* The Surnames of Ireland, Edward MacLysaght, Dublin, 1978....

, who reigned 1307–15, and again from 1318 till his death in 1322.

Tomás became bishop before 14 October 1347, the see having being vacant for some years after the death of Bishop Seoán Ó Leaáin

Seoán Ó Leaáin

Seoán Ó Leaáin, Bishop of Clonfert, 1322-1336. Ó Leaáin appears to have been a member of the same family asMauricius Ó Leaáin , Nicol Ó Leaáin, and Gregorius Ó Leaáin ....

 in 1336. Ó Cellaigh died 1378, being succeeded by his cousin, Muircheartach mac Pilib Ó Ceallaigh

Muircheartach mac Pilib Ó Ceallaigh

Muircheartach mac Pilib Ó Ceallaigh, Archbishop of Tuam and patron of An Leabhar Ua Maine, died 1407.A son of Pilib Ó Ceallaigh, and a brother to William Buidhe Ó Cellaigh, King of Uí Maine and Chief of the Name ....

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