Jean, the son of Charles Barbeyrac a distinguished physician of Montpelier, was born at Beziers in Lower Languedoc, in 1674. He was successively professor of belles lettres at Berlin, of law and history at Lausanne, and of public law at Groningen. His death took place in 1729. He translated into French the two celebrated works of Pufendorf, his Law of Nature and Nations, and his Duties of a Man and a Citizen; to both of which he added excellent notes, and to the former an introductory preface. He translated also Grotius's treatise De Jure Belli ac Pacis, with large and excellent notes; several of Tillotson's Sermons; Cumberland's treatise on the Law of Nature; and various other works. He compiled a supplement, in five vols. folio, to the collection of treatises named Grand Corps Diplomatique; and was the author of an original work entitled Traité de Jeu, 2 vols. 8vo.