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Female Margaret De Grey Click to view Margaret De Grey in the family tree

Margaret De was born about 1272 in Of, Rotherfield, Oxfordshire, England.1   Margaret De's father was Robert De Grey and her mother was Joan De Valoines.  Her paternal grandparents were Walter De Grey and Isabel De Duston; her maternal grandfather was Thomas De Valoines. She had two brothers named John De and Thomas De.  She was the second oldest of the three children.1 

Family Details of Margaret De's family with Thomas Fitzbernard

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