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

William was born in 1193.  William's father was Henry de Percy and his mother was Isabel de Brus.  His paternal grandparents were Joscelin de Lorraine and Agnes de Percy.  He was an only child.  He died at the age of 52 in 1245.

Family Details of William's family with Ellen de Balliol

Family Details of William's family with Joan de Briwere

Source/Citation
A. Rose, Kings of the North (2002)