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Female Joan of Cornwall Click to view Joan of Cornwall in the family tree

Joan was born in 1139.  Joan's father was Earl Rainald de Dunstanville of Cornwall and her mother is Beatrice FitzWilliam of Mortain.  Her paternal grandparents were King Henry ("Beauclerc", "Fine Scholar") Plantagenet I of England and Sibyl Corbet; her maternal grandfather was Earl William de Burgo Mortaigne of East Cornwall and her maternal grandmother is Isabel FitzRichard de Clare. She had two sisters named Maud and Beatrice.  She is the oldest of the three children.


Joan's family with Ralph de Valletort

‌Joan and Ralph were married in a religious ceremony in 1157.  They had a son named Roger.

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