His father Cadwgan appealed to him to surrender and return Nest but was ignored. His inability to control and restrain his son left Cadwgan politically vulnerable, without allies, and was deposed by Henry I and stripped of his lands which were offered to his nephews and siblings if they would bring his son to justice. Nest and her children were eventually returned to Gerald of Windsor and Owain was forced to flee to Ireland to escape his cousins Madog and Ithel ap Rhirid who were hunting him.