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Male William De Percy Click to view William De Percy in the family tree

William De was born in 1274 in Of, , Sussex, England.  William De's father was Henry De Percy and his mother was Eleanor Plantagenet (de Warenne) Baroness Percy.  His paternal grandparents were William De Percy and Ellen Baliol; his maternal grandparents were John de Warren , Earl of Warren & Surrey 7th and Alice Le Brun De Lusignan. He had two brothers named John De and Henry De.  He is the youngest of the three children.

Sources/Citations
Ancestral File (TM), Ancestral File (TM)

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