Jeanne Camus de Pontcarré, marquise d’Urfé (1705-1775) was a French aristocrat and eccentric widow, with a passion for the occult and alchemy. Rich and gullible, she is better known under the name Madame d’Urfé from the biographies of several adventurers of the 18th century, such as Cagliostro and Casanova. Biography Early life and marriage Born in 1705, with the maiden name Jeanne Camus de Pontcarré, she was the daughter of Nicolas Pierre Camus de Pontcarré, the first president of the parliament of Rouen. On 11 September 1724, she married Louis-Christophe de la Rochefoucauld-Lascaris (1704-1734), Marquis de Langeac and Urfé. They had three children: Alexandre-François (or Jean-Antoine-François), Marquis de Langeac (born 1733, died 20 October 1742). Adelaide-Marie-Thérèse, Marquise de Bagé and Langeac, Countess of Saint-Just (born 6 August 1727 ; married 7 May 1754 with Alexis Jean Marquis du Chatelet-Fresnières (?-1761); died ?). Agnes Marie of Rochefoucaud Lascaris d'Urfé (born 27 February 1732 ; married 4 April 1754 with Paul Edouard Colbert, lord of Estouteville, Count of Creuilly (?-1756); died 1 July 1756). Widowhood In 1734, her husband died, leaving her a twenty-nine-year-old widow with the freedom to devote her time and fortune to her alchemical ambitions (she is described by the Marquise de Créquy as "the most stubborn of the alchemists and the most determined complainers of her time"), before squandering the rest with occult adventurers. This led her to meet the Count of St. Germain, with whom she worked for 4 years on trying to find the philosopher's stone, an endeavour which cost her nearly one hundred thousand écu. A few years later, she met the Count of Cagliostro, who made her spend four to five hundred thousand francs in an attempt to summon the spirits of Paracelsus and Moïtomut, who were supposed to reveal to him the last of the Grand Arcanum works. In 1757, she lived in Paris on the Quai des Théatins (Quai Voltaire since 1791), next to the Hotel de Bouillon, where she met Casanova. By the middle of that year, Casanova had successfully treated the sciatica of her nephew, Nicolas de la Tour d'Auvergne (1720-?), with a pentagram and a few magic words. Excited by this accomplishment, de la Tour d'Auvergne introduced Casanova to his aunt, the Marquise d'Urfé. According to his memoirs, Casanova convinced her that he possessed occult powers, and agreed to help her be reborn in a new body. For this