 Cerball, while unable to install himself as king of Leinster, was able to prevent any rival king exercising real power there.Domnall would have succeeded his father as head of the Uí Fáeláin sept in 863.His predecessor as King of Leinster, Ailill mac Dúnlainge of the Uí Muiredaig sept had died in 871, however Muiredach mac Brain (died 885) of the Uí Dúnchada sept is associated with the Leinster forces in association with events in 870 and 875.