Crimhthann mac Reachtghal (died 757) was Abbot of Clonfert, Ireland.
He is very uncertainly associated with Crimthann the Warlike, who defeated the Delbhna Nuadat at the battle of Bealach Cro in 756, during the reign of King Aedh Ailghin of Uí Maine, died 767.[ citation needed ]
Flaithbertach mac Loingsig was a High King of Ireland. He was a member of the Cenél Conaill, a branch of the northern Uí Néill. He was the son of Loingsech mac Óengusso, a previous high king. He ruled from 728 to 734.
Cathal mac Tadg was King of Connacht, 973.
Fincath mac Garrchu was a king of Leinster. He was a member of the Dál Messin Corb dynasty's principal sub-sept, the Uí Garrchon. He was the son of the founder of this sept Garrchú mac Fothaid.
Fráech mac Finchada or Fróech mac Findchado was a king of Leinster. Fráech was a member of the Dál Messin Corb dynasty's principal sub-sept, the Uí Garrchon. He succeeded his father, Fincath mac Garrchu,. He ruled from 485 to 495.
Ainmuire mac Sétnai or Ainmire or Ainmere was a High King of Ireland from the Cenél Conaill branch of the Uí Néill. He was the great-grandson of Conall Gulban, founder of this branch. He ruled from 566 to 569. He was the first high king from the Cenél Conaill.
Áed Uaridnach was an Irish king who was High King of Ireland. He is sometimes also known as Áed Allán, a name most commonly used for the 8th-century king of the same name, this Áed's great-great-grandson.
Colmán mac Cobthaig was a king of Connacht from the Ui Fiachrach. He was the first king of Connacht from the Ui Fiachrach Aidhne branch. This branch was descended from Eochu, the brother of Ailill Molt. According to the Book of Ballymote he was the grandson of Goibnenn mac Conaill (flor.537), the first Aidne king mentioned in the annals, but Rawlinson Genealogies name his grandfather as Gabrán.
Faílbe Flann mac Áedo Duib was a King of Munster from the Eóganacht Chaisil branch of the Eoganachta. He succeeded Cathal mac Áedo Flaind Chathrach of the Glendamnach branch in 628. He was the younger brother of a previous king Fíngen mac Áedo Duib. His sobriquet Flann meant "blood-red".
Crimthann mac Énnai was a King of Leinster from the Uí Cheinnselaig sept of the Laigin. He was the son of Énnae Cennsalach, the ancestor of this dynasty.
Suibne mac Colmáin was a King of Uisnech in Mide of the Clann Cholmáin. He was the son of Colmán Már mac Diarmato, also King of Uisnech. He ruled Uisnech from 587 to 600.
Fergus mac Colmáin was a King of Uisnech in Mide, Ireland, of the Clann Cholmáin. He was the son of Colmán Már mac Diarmato and brother of Suibne mac Colmáin, also kings of Uisnech. He ruled Uisnech from 600 to 618.
Ailill Cruitire mac Áedo Sláine was a King of Brega from the Síl nÁedo Sláine branch of the southern Ui Neill. He was the son of the high king Áed Sláine mac Diarmato. His byname meant "harper".
Máel Dóid mac Suibni was a King of Uisnech in Mide of the Clann Cholmáin. He was the son Suibne mac Colmáin and brother of Conall Guthbinn mac Suibni, previous kings. He ruled from 635 to 653.
Goibnenn mac Conaill was the first king of the Ui Fiachrach Aidhne mentioned in the annals. He was the great-grandson of the high king Nath Í.
Fiachu mac Néill was a king of Uisnech in Mide of the Ui Neill dynasty. He was the son of the high king Niall Noígíallach. According to the king list in the Book of Leinster, he succeeded his brother Conall Cremthainne as king of Uisnech.
Báetán mac Muirchertaig, also Baetán Bríge, was an Irish king who is included in some lists as a High King of Ireland. He was the son of Muirchertach mac Muiredaig, also considered a high king. He was a member of the Cenél nEógain branch of the northern Uí Néill. He ruled in Ailech from 566 to 572.
Eochaid mac Domnaill, also Eochaid Find, was an Irish king who is included in some lists as a High King of Ireland. He was the son of Domnall Ilchelgach and grandson of Muirchertach mac Muiredaig, also considered high kings. He was a member of the Cenél nEógain branch of the northern Uí Néill. He ruled in Ailech from 565 to 571.
Áed mac Conchobair was a King of Connacht from the Uí Briúin branch of the Connachta. He was the son of Conchobar mac Taidg Mór, the previous king and was the first of his three sons to rule in succession. He was of the Síl Muiredaig sept of the Uí Briúin. He ruled from 882-888.
Muireadhach mac Olcobhar was Abbot of Clonfert.
Ruthmael was Abbot and Bishop of Clonfert.