Mahaut of Châtillon was the daughter of Guy IV of Châtillon, Count of Saint-Pol and Marie of Brittany, daughter of John II, Duke of Brittany. Wikipedia
Born: 1293
Died: October 3, 1358 (age 65 years)
Grandchildren: Joanna of Bourbon, Joanna I of Naples, Catherine of Bohemia, and more
Great grandchildren: Charles VI of France, Louis I, Duke of Orléans, Amadeus VII, Count of Savoy, and more
Spouse: Charles of Valois (m. 1308–1325)