Keating also has Domhnall O Faolain, king of the Deise and Ivar of Waterford invading and plundering Munster. Brian Bóruma then gave battle and defeated them at Fan mic Connrach, they were then chased to Waterford where Domhnall and most of the foreigners (Ostmen) were slain and the town was plundered and burned. It is not clear when this is supposed to have happened or if this is the same Domhnall O Faolain reported in the Annals of the Four Masters as having died in 995.