Montholon, Or Montholon-Semonville, Charles Tristan, count and afterward marquis de, a French soldier, born in Paris, July 21, 1783, died Aug. 21, 1853. The son of a marquis, he became in 1798 a non-commissioned officer in a regiment of cavalry, and in less than two years reached the rank of chef d'escadron. He evinced great zeal in behalf of Bonaparte on the 18th Brumaire, and was afterward promoted for his services in Italy, Germany, and Poland, especially distinguishing himself, as aide-de-camp to Berthier, in the battle of Wagram (1809), after which he was made a count and attached to the personal staff of Napoleon. He was soon after appointed chamberlain to the emperor, and intrusted with several diplomatic missions. In 1814 he was made general of brigade, and became commandant of the department of the Loire. He joined the emperor on his return in 1815, acted as his aide-de-camp during the hundred days, fought for him to the last, and followed him to St. Helena. He witnessed his death, was appointed one of Ins executors, and returning to Europe published, in conjunction with Gen. Gour-gand, Memoires pour servir d l'histoire de France sous Napofeon, ecrits d Ste. Helene sous iadictei (8 vols. 8vo, Paris, 1823). His fortune having been ruined by his protracted ab-sense, he tried to retrieve it by commercial enterprise, but became involved in debt and fled to Belgium. lie was restored to the army after the revolution of 1830. He accompanied Prince Louis Napoleon in his attempt at Boulogne in 184n, and shared his imprisonment at Hain, but at the end of a few years received a pardon.

While in prison he wrote Recits de la captirite de' Vempereur Xapoleon d Ste. Helene (Paris. 184-7). After the revolution of 1848 he became a member of the legislative assembly.