Charlotte-Jeanne Béraud de La Haye de Riou (4 October 1738[1] – 6 February 1806) was a mistress to Louis Philippe d'Orléans, Duke of Orléans, and ultimately, his wife; however, Louis XV would not allow her to become the Duchess. She wrote and acted in several plays. She is known simply as Madame de Montesson.
^Charlotte-Jeanne was baptised on 5 October 1738, the day following her birth: Turquan, Joseph, Madame de Montesson, douairière d'Orléans (1738-1806), d'après des documents inédits: Appendice p. 301, Émile Paul, éditeur, Paris, 1904 (French)