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Male William de PERCY Click to view William de PERCY in the family tree

William de was born about 1198 in Alnwick, Northumberland, England.  William de's father was Henry I de PERCY and his mother was Isabel de BRUS.  His paternal grandparents were Joscelin de PERCY and Agnes de PERCY.  He was an only child.  He died about July 28th, 1215 in Yorkshire, England.


William de's family with Ellen de BALIOL

They had a son named Henry I de.