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Male John De Grey Click to view John De Grey in the family tree

John De was born about 1271 in Of, Rotherfield, Sussex, England.1   John De's father was Robert De Grey and his mother was Joan De Valoines.  His paternal grandparents were Walter De Grey and Isabel De Duston; his maternal grandfather was Thomas De Valoines. He had a brother and a sister, named Thomas De and Margaret De.  He was the oldest of the three children.  He died on October 17th, 1311 in Rotherfield, Oxfordshire, England.1 

Family Details of John De's family with Margaret Ole Oddingeseles

1 phelps1609.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #1609