 In 733 Cathal raided the lands of the Southern Uí Néill, but was defeated and driven off from Tailtiu by Domnall Midi of Clann Cholmáin.Cathal had more success against the neighbouring Clann Cholmáin Bicc, ruled by Fallomon mac Con Congalt, whom he defeated at the Hill of Ward.In 734 Cathal inflicted a defeat on the Leinstermen at Bealach Ele.