Gwenhwyfer Verch Evan Ap Gruffydd Ap Madog Ddu

Gwenhwyfer's father was Evan Ap Gruffydd Ap Madog Ddu.  Her paternal grandfather was Gryffydd Ap Madog Dhu.  She was an only child.  Gwenhwyfer is no longer alive.

‌Gwenhwyfer and Gwillym were married in a religious ceremony about 1360.  They had a son named Griffith.