SAINT-LAMBERT, JEAN FRANÇOIS DE (1716-1803), French poet, was born at Nancy on the 26th of December 1716. He entered the army and, when Stanislaus Leszczynski was established in 1737 as duke of Lorraine, he became an official at his court at Lunéville. He left the army after the Hanoverian campaign of 1 7 56-57, and devoted himself to literature, producing a volume of descriptive verse, Les Saisons (1769), now never read, many articles for the Encyclopédie, and some miscellaneous works. He was admitted to the Academy in 1770. His fame, however, comes chiefly from his amours. He was already high in the favour of the marquise de Bouiiiers, Stanislaus's mistress, Whom he addressed in his verses as Doris and Thémire, when Voltaire in 1748 came to Lunéville with the marquise de Chatelet. Her infatuation for him and its fatal termination are known to all readers of the life oi Voltaire. His subsequent liaison with Madame d'Houdetot, Rousseau's Sophie, though hardly less disastrous to his rival, continued for the whole lives of himself and his mistress. Saint-Lambert's later years were given to philosophy. He published in 1798 the Principe des mwurs chez toutes les nations on catéchisrne universal, and published his Qiuvres philasophiques (1803), two years before his death on the 9th of February 1803. Madame d'Houdetot survived until the 28th of January 1813.

See G. Maugras, La Cour de Lunéville (1904) and La Marquise de Boujiers (1907); also the literature dealing with Rousseau and Voltaire.