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Male Sir William of Penrhyn Griffith Click to view Sir William of Penrhyn Griffith in the family tree

Sir William of Penrhyn was born in 1445 in of Penrhyn, Caernarvonshire, Wales.1   Sir William of Penrhyn's father was Gwilym Fychan Of Penrhyn Ap Gruffydd and his mother was Alice Dalton.  His paternal grandparents were Gwilym Ap Gruffydd Of Penrhyn and Joan Stanley; his maternal grandfather was Sir Richard Dalton. He had a sister named Agnes.  He died at the age of 61 in 1506.1 


Sir William of Penrhyn's first family with Joan Troutbeck

‌Sir William of Penrhyn and Joan were married in a religious ceremony before 1480.1   They had two sons and a daughter, named William, Sir William II of Penrhyn and Alice.


Sir William of Penrhyn's second family with Elsbeth Grey

‌Sir William of Penrhyn and Elsbeth were married in a religious ceremony before 1506.1 

1 Joanne's Tree.1 GED.GED
Further sources/citations:
Descent of President John Quincy Adams from Edward I, King of England, Plantagenet Ancestry of 17th Century Colonists @ 1st ed, pp 73-75, "Coytemore", daveanthes.FTW

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