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Female Mary de Percy Click to view Mary de Percy in the family tree

Mary was born in 1360 in England.1   Mary's father was Henry de Percy and her mother was Mary Plantagenet.  Her paternal grandparents were Henry de Percy IV Baron Percy and Idonea de Clifford; her maternal grandparents were Henry of Lancaster and Maud de Chaworth. She had two brothers named Henry and Thomas.  She was the youngest of the three children.

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