He came to the throne on the death of Cormac mac Airt.
Sources differ as to his killer: he was either Lugaid mac Lugna, Lugaid Menn son of Óengus, or Lugna Feirtre.
He was succeeded by Cormac's son Cairbre Lifechair.
The chronology of Geoffrey Keating's Foras Feasa ar Éirinn dates his reign to 244–245, the Annals of the Four Masters to 266–267.
This biography of a member of an Irish royal house is a stub.