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Female Isabella de Beaumont Click to view Isabella de Beaumont in the family tree

Isabella de's father was Louis D' Acre De Brienne and her mother was Agnes, Viscountess de Beaumont.  Her paternal grandparents were Jean De Brienne King of Jerusalem and Berengaria, Princesa de Leon; her maternal grandparents were Raoul VI de Beaumont Viscount of Maine and Agnes de Normandy. She had four brothers and a sister, named Jean De, Henry De Beaumont Earl Of, Richard, Henry Lord Beaumont, Earl of and Marie de.

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