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Female Joan de Gavaston Click to view Joan de Gavaston in the family tree

Joan was born after 1307.  Joan's father was Piers de Gavaston and her mother was Margaret de Clare.  Her paternal grandparents were Ernaud de Gaveston and Clarmunda de Marsau; her maternal grandparents were Gilbert the Red de Clare and Joan of Acre Plantagenet. She has a sister named Amy. She had a half-sister named Margaret.

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