Gronwy Ap Tudur Trefor

Gronwy Ap Tudur was born in 0926 in Denbighshire,Wales.¹   Gronwy Ap Tudur's father was Tudur Trefor Ap Ynir and his mother was Angharad Verch Hywel Dda.  His paternal grandfather was Ynir Ap Cadforch. He had a brother named Lluddica Ap.  He was the older of the two children.

They had a daughter named Gwen Verch.