Gwermen was born in 0740 in Wales.1 Gwermen's father was Gwaeddgar ap Bleddyn and his mother was <Unknown>. His paternal grandparents were Bywyn ap Byordderch and <Unknown>. He was an only child.
General Notes
Sources:
1. Author: Peter C., Bartrum Title: Welsh Genealogies AD 300-1400 Publication: Name: University of Wales Press; Date: , 1978; Repository: Name: Celtic Royal Genealogy database by Arthur E. Turner-Thomas