Marie, Countess of Ponthieu
Marie of Ponthieu was suo jure Countess of Ponthieu and Countess of Montreuil, ruling from 1221 to 1250. Wikipedia
Born: April 17, 1199, France
Died: September 21, 1250 (age 51 years), Normandy, France
Spouse: Simon, Count of Ponthieu (m. 1208)
Grandchildren: Eleanor of Castile, Ferdinand, Count of Aumale, Reginald I of Guelders, and more
Grandparents: Louis VII of France, John I, Count of Ponthieu, and Constance of Castile
Children: Joan, Countess of Ponthieu, Philippe of Dammartin, Marie de Dammartin, and more