Anarawd and his immediate heirs made the village of Aberffraw on Anglesey (Ynys Môn) their early principal family seat.
In the 10th century, Rhodri the Great had inherited Gwynedd from his father and Powys from his mother, and he added Seisyllwg (Ceredigion and Carmarthenshire) by a dynastic marriage to Angharad of Seisyllwg [REF].