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Male Sir William fitzWilliam Click to view Sir William fitzWilliam in the family tree

William was born about 1226 in Elmley, Yorkshire, England .  William's father was Sir Knight Thomas FitzWilliam and his mother is Agnes Bertram.  His paternal grandfather was Lord William FitzWilliam of Sprotborough and his paternal grandmother is Ela de Warenne; his maternal grandparents were Baron Roger Bertram II of Mitford and Agnes of Northumberland. He had a brother and a sister, named William and Dionise.  He was the second oldest of the three children.  He died before 1294.


William's family with Agnes de Grey

They had a son named William.

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