Congal Cennmagair

[2] Congal's predecessor was Loingsech mac Óengusso, his paternal first cousin, who died in battle in 703.

[3] Congal was a guarantor of Adomnán's "law of the innocents"—the Cáin Adomnáin—agreed at the Synod of Birr in 697.

He is the second lay guarantor listed after Loingsech and is called King of Tyrconell, though these titles may have been added later.

[6] Geoffrey Keating's Foras Feasa ar Éirinn records that he burned the church of Kildare during this and implies his death was related to this.

[9] He was followed as High King by another northerner, Fergal mac Máele Dúin (died 722) of the Cenél nEógain.