Gruffudd Fychan ap Gruffudd ap Dafydd Gôch Parents Gruffudd ap Dafydd Goch Children Hywel Coetmor ap Gruffudd Fychan ap Gruffudd ap Dafydd Gôch Siblings Efa ferch Gruffudd ap Dafydd Gôch ap Dafydd