Charlotte Jeanne Béraud de La Haye de Riou (4 October 1738– 6 February 1806) was a mistress of Louis Philippe d'Orléans, Duke of Orléans, and later his wife. However, Louis XV would not allow her to become the Duchess. She is known simply as Madame de Montesson. For her husband's fun and her own, she set up a small theatre and wrote many plays, in which she acted. She was a friend of Joséphine de Beauharnais. She married twice but had no children. In 1770, a small home was built in Paris for her use. The building was called the Hôtel de Montesson. It was destroyed by fire in 1810.