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

William was born in 1332 in ,Alnwick,Northumberland,England.  William's father was Henry De Percy and his mother was Idonea Clifford.  His maternal grandparents were Robert De Clifford and Maud De Clare. He had five brothers and five sisters, named Henry De, Richard, Roger De, Robert, Thomas De, Margaret De, Isabel De, Margaret De, Maud De and Eleanor.  He was the fifth youngest of the eleven children.

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