Anne-Catherine de Ligniville, Madame Helvétius (23 July 1722 - 12 August 1800), nicknamed "Minette", maintained a renowned salon in France in the 18th century.
One of the twenty-one children of Jean-Jacques de Ligniville and his wife Charlotte de Saureau, Anne-Catherine de Ligniville, the niece of Madame de Graffigny, married the philosopher Helvétius in 1751. She maintained a salon which featured the great figures of the Enlightenment for over five decades.
Among the habitués of Madame Helvétius's salon were Julie de Lespinasse and Suzanne Necker, writers Fontenelle, Diderot, Chamfort, Duclos, Saint-Lambert, Marmontel, Roucher, Saurin, André Chénier, and Volney. Thinkers such as Condorcet, d’Holbach, Turgot, l’abbé Sieyès, l’abbé Galiani, Destutt de Tracy, l’abbé Beccaria, l’abbé Morellet, Buffon, Condillac ou l’abbé Raynal mingled with such scientists as d’Alembert, Lavoisier, Cuvier and Cabanis. The sculptor Houdon, Baron Gérard and other leading figures of the time such as Charles-Joseph Panckoucke and François-Ambroise Didot were also attendees. Such politicians as Malesherbes, Talleyrand, Madame Roland and her husband Roland de la Platière, Thomas Jefferson, Benjamin Franklin (who proposed marriage to her), Mirabeau, Pierre Daunou, Garat, Nicolas Bergasse and Napoléon Bonaparte could also be found at her salon. Madame Helvétius died at Auteuil.