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

William de Percy IV was born in Alnwick, Northumberland.1   William de Percy IV's father was Henry de Percy Baron Percy and his mother was Isabel le Brus.  His paternal grandparents were Joscelin de Louvain Baron Percy and Agnes de Percy Bss Percy; his maternal grandparents were Adam le Brus III Baron Skelton and Juette de Arches.  He was an only child.  He died about July 28th, 1245.  He was buried in 6th Baron..1 1 

Family Details of William de Percy IV's family with Eleana de Baliol

Family Details of William de Percy IV's family with Joan de Briwere

1 Johnson.FTW
Further source/citation:
1144734.FTW

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