 Mac Auisle was succeeded in turn by another son of Ímar, Sichfrith Ivarsson (883–888), who burned the monasteries of Lismore and Cloyne in the first year of his reign.He may also have been responsible for an attack on the ecclesiastical settlement of Kildare in 885 or 886 in which the vice-abbot Suibne mac Duib dá Boirennn was taken captive with 280 others.During Sichfrith's reign there was further civil unrest in the colony, caused by another son of Járnkné called Eolóir.