Charlotte-Jeanne Béraud de La Haye de Riou 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.
Charlotte-Jeanne Béraud de La Haye de Riou was born in Paris of an old Breton family.
She wrote and acted in several plays. She is known simply as Madame de Montesson. For her husband's amusement and her own, she set up a little theater and wrote several plays, in the acting of which she herself took part.
She was arrested on 20 April 1793 (1 floréal an II of the Republican calendar) during the Terror, and first imprisoned in the La Force prison in Paris. She was released on 28 September 1794 (after the fall of Maximilien Robespierre, befriended Joséphine de Beauharnais, and was a prominent figure at the beginning of the empire. See Charles Collé, Journal (1868).
The Memoirs of St Simon, Madame de Genlis, the duchesse d'Abrantes and Mme de Levis. G Strenger, "La Société de la marquise de Montesson," in the Nouvelle revue (1902). J Turquan, Madame de Montesson douairière d'Orléans (Paris, 1904).
And G. Capon and R Yves-Plessis, Les Théâtres clandestins du xviii' siècle (1904).