 In Dublin Amlaíb was succeeded by one of his sons, Oistin (Eysteinn); but Albdann (Hálfdan), the leader of the Dubgenti and conqueror of Northumbria, also claimed the throne.In 875 Hálfdan invaded the settlement and killed Eysteinn, but the High King Áed Findliath intervened and expelled him from the city, replacing him with Ímar's son Barith (), who was the foster-father of Áed's son.This was the last serious conflict in the War of the Irish with the Foreigners for a generation.