Óengus mac Nad Froích

He was the son of Nad Froich mac Cuirc by Faochan, a British lady (called daughter of the King of Britain).

The victors included Iollann mac Dunlaing, and Oilill, his brother of the Uí Dúnlainge sept of Laigin, and Eochaidh Guinech of the Uí Bairrche sept of Laigin, and, according to the Annals of Tigernach,[6] Muirchertach Mac Ercae, the Ui Neill king of Ailech.

According to Cormac McSparron[8] the reference to Muirchertach Mac Ercae as king of Ailech in the Annals of Tigernach probably arises from an insertion made after 913.

The reason for its insertion may have been an attempt to push the expansion of the Uí Neill and their taking of Aileach farther back into antiquity than was the case.

[10][11] He was the ancestor of three major septs of the Eóganacht including the Cashel, Arithir Cliach, and Glendamnach lines.

Baptism of Óengus by Saint Patrick , stained glass , St Ailbe's Church , Emly .
The Baptism of the King of Cashel by St Patrick , painted by James Barry , c. 1780s. The conversion of Óengus mac Nad Froích moved Munster towards Christianity.