François de Chasseloup-Laubat (Saint-Sornin, 18 August 1754 – Paris, 6 October 1833)
Originally a roturier, he entered as a candidate for the artillery in 1770, but then studied at Mézières, leaving it as a lieutenant 2nd class in 1780. He was promoted to lieutenant 1st class in 1784, to captain in 1791, to battalion chief in 1793, to brigade chief in 1794. He was then brigadier in 1797, director in 1798, lieutenant general sitting on the fortification committee in 1799, inspector general in 1800. He was commander-in-chief of the engineers in Italy from 1796 to 1813, except in 1807 and in 1812, when he served in the Grande Armée. State Councillor in the war section in 1811, he was appointed senator in 1813. In 1814 he voted for the deposition of Napoleon and in 1815 he did not take part to the Hundred Days. He became a member of the conseil de perfectionnement and conseil d’instruction of the École Polytechnique in 1819, president of the former in 1820. He was decorated with the iron Crown (commander in 1805), the Legion of Honour (Grand Cross in 1814) and the order of Saint Louis (commander in 1816). He was created count of the Empire in 1808, a Peer of France in 1814 and marquis in 1817 (cf. SHD, 7 Yd 329, AN, LH/500/39, s.d. Notice historique et militaire sur le général Chasseloup. Milan: Destefanis).