General Notes

Deposed his cousin Murchad in 823 and became king of the North; in 827 he defeated the men of Oriel who had opposed the election in of his personal confessor as Archbishop of Armagh; routed the Norse invaders at Lough Foyle in 823, and defeated the Danes twice more in 835 and 843; defeated Feidhlimidh (k. of Munster) in 840 and defeated the Danes againn in 846, but during the pursuit of the latter he was drowned in the flooded river Callain while trying to rescue on of his men.