Eunydd ap Gwermwy was born about 1020. Eunydd ap Gwermwy's father was Gwernwy ap Hwrgeneu and his mother was Gwenllian verch Rhys. His paternal grandfather was Hwrgeneu; his maternal grandfather was Rhys. He was an only child.
General Notes
pg 113, Burke's " A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire" published 1883