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Male Sir Knight William de Clare Click to view Sir Knight William de Clare in the family tree

William was born on May 18th, 1228 in Gloucestershire, England.  William's father was Earl Gilbert de Clare III of Gloucester & Hertford and his mother was Lady Isabella Marshall.  His paternal grandparents were Richard de Clare III and Amicia de Bellomont of Gloucester; his maternal grandparents were William Marshall and Isabel FitzGilbert de Clare. He had a brother and two sisters, named Richard, Avicia and Isabel.  He is the youngest of the four children.


William's family

He has a biological daughter named Isabel.

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