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

William was born in 1224.1   William's father was William IV Baron Percy De Percy and his mother was Eleanor De Baliol.  His paternal grandparents were Henry De Percy and Isabel Brus; his maternal grandparents were Ingelram De Baliol and Agnes De Berkeley. He had six brothers named Ingelram De Percy Lord, Alan, Walter, Josceline De Percy Lord, Geoffrey De Percy Lord and Henry II. He had five half-sisters named Alice, Ada, Anastasia, Agnes and Joan.1 

1 Joanne's Tree.1 GED.GED
Further source/citation:
daveanthes.FTW

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