Gwaethfoed Ap Eunydd

Gwaethfoed was born about 0942 in , , , Wales.  Gwaethfoed's father is Euyndd Ap Cadifor and his mother is Morfydd Verch Edwyn.  His paternal grandfather is Cadifor (); his maternal grandfather is Edwyn ().  He is an only child.

He has a biological son named Cynan.