Efa ab Gwrgant Peerage person ID=442772 (b. 1035) Parents Gwrgant ab Ithel Children Llywelyn ap Cadwgan Siblings Efa ferch Gwrgant Nest ferch Gwrgan ab Ithel ab Idwallon Iestyn ap Gwrgant Myfanwy ferch Gwrgan ab Ithel Ddû ab Owain Partners Cadwgan ab Elystan