Marie Marguerite de Valois was the illegitimate daughter of King Charles VII of France and his mistress Agnès Sorel.
She had two sisters, Charlotte de Valois and Jeanne de Valois.
Marie married Olivier de Coétivy, Count of Taillebourg. Wikipedia
Born: 1444
Died: 1473 (age 29 years)
Parents: Charles VII of France and Agnès Sorel
Children: Catherine de Coëtivy
Grandparents: Charles VI of France, Isabeau of Bavaria, Catherine de Maignelais, and more
Partner: Olivier de Coëtivy (1458–) and Olivier de Coëtivy