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A celebrated French scholar, lexicographer, and historian; born at Amiens, Dec. 18, 1610; died at Paris, Oct. 23, 1688. A jurisconsult, advocate of the Paris Parliament, he gave up the post to study. His "Glossary of Middle and Low Latin" (3 vols., 1678; completed and extended to 6 vols. by the Benedictines of St. Maur, 1733-36; latest ed. by La Fayre, 10 vols., 1883-88) is still indispensable in reading mediaeval books. He is author of a similar work on Greek: "Glossary for the Authors of Middle and Low Greek" (2 vols., 1688). Besides these he wrote in French a "History of the Empire of Constantinople under the Frank Emperors" (1657), and in Latin a "Byzantine History". Another important historical work written by him is "Of the Princedoms Oversea", first published (1869) under the title "Families of Oversea".