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Male de Luxembourg, Countess of Guise Click to view de Luxembourg, Countess of Guise in the family tree Click to view de Luxembourg, Countess of Guise in the family tree

Isabelle's father was Pierre de Luxembourg I, Seigneur de Beaurevoir et Richeburg and his mother was Marguerite de Baux.  His paternal grandparents were Jean de Luxembourg, Lord of Beauvoir and Margaret d'Enghein. He had five brothers and two sisters, named Lois, Thibaud, Jacqes, Valeran, Jean, Jacquetta and Catherine.  He died in 1472.