Conall Cremthainne
Conall Cremthainne, also called Conall Err Breg, was an Irish king. He was the son of Niall of the Nine Hostages, and one of the progenitors of the Uí Néill dynasty.
He is the first king of Uisnech in Mide from the Uí Néill mentioned in the Book of Leinster king list. Conall son of Niall was nicknamed Cremthainne, to distinguish him from his brother Conall Gulban, ancestor of the Cenél Conaill. The habit of giving the same name to different sons remained common among the prolific Irish princes until the sixteenth century. According to a life of Saint Patrick by Tírechán, Patrick blessed Conall and rejected his brother Coirpre mac Néill, ancestor of the Cenél Coirpri, at a meeting at Tailtiu. Nothing is recorded of him in the annals other than his death date.
Through his son Fergus Cerrbél, he was the ancestor of the Clann Cholmáin and Síl nÁedo Sláine. Another son was Ardgal mac Conaill, ancestor of the Cenél nArdgail in County Meath.
