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

Josceline de was born about 1238 in ,Petworth,Sussex,England.1   Josceline de's father was Sir. William de Percy Baron and his mother was Eleanor de Balliol.  His paternal grandparents were Henry I de Percy Sheriff of Northumberland and Isabel Brus; his maternal grandparents were Ingelram (Ingram) (Balliol) De Baliol and Agnes de Berkeley. He had seven brothers named Ingelram de, William de, Walter de, Henry De, Geffrey de, Richard de and Alan de.  He was the fourth youngest of the eight children. He had five half-sisters named Anastace, Joane de, Alice de, Agnes de and Ada de.

1 "Genealogical Research of Kirk Larson"
Further sources/citations:
"FamilySearch® Ancestral File™ v4.19", "Complete baronetage: Microprint ed." @ 3:269

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