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

Joan was born in 1273 in Thonock, Gainsborough, Lincolnshire, England.1   Joan's father was Sir Richard de Cornwall Lord of Thunnock and her mother was Joan St. Owen.  Her paternal grandparents were Earl of Cornwall Richard Plantagenet and Joan Valletort; her maternal grandparents were John St. Owen and <Unknown>. She had a sister named Lamellen.  She was the older of the two children.

1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=:3110528&id=I612309152

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