Marie Charlotte de La Tour d'Auvergne (Marie Sophie Charlotte; 20 December 1729, Paris – 6 September 1763.) was a French noblewoman and member of the House of La Tour d'Auvergne. Married into the House of Beauvau, a powerful family originating in Anjou, she had a daughter, aged twenty, and died of smallpox at the age of thirty three. The present Duke of Mouchy branch of the Noailles family are descended from her.

Born at the Hôtel de Bouillon in Paris to Emmanuel Théodose de La Tour d'Auvergne (1668–1730), sovereign Duke of Bouillon, and his last wife Louise Henriette Françoise of Lorraine; she was the couple's only child. Her mother was a daughter of Joseph of Lorraine, Count of Harcourt.

Her father was a son of Godefroy Maurice de La Tour d'Auvergne and Marie Anne Mancini, the latter was a niece of Cardinal Mazarin and an infamous hostess in her day.

Marie Charlotte was styled as Mademoiselle de Château-Thierry from birth. When her older half sister Anne Marie Louise, Mademoiselle de Bouillon was married to Charles de Rohan, Prince of Soubise in 1734, as the most senior unmarried princess of the La Tour d'Auvergne family, she was styled Mademoiselle de Bouillon until her marriage.

A first cousin included Antoine de Vignerot du Plessis, son of her aunt Élisabeth Sophie of Lorraine and the famous womaniser Armand de Vignerot du Plessis, duc de Richelieu.

...
Wikipedia