La Poix de Fréminville was born to a family of naval Engineers, and joined the Navy in 1801. He served as an aid to Rear-Admiral Latouche-Tréville and distinguished himself on the gunboat Etna during Nelson's Raids on Boulogne.
Seeing little action in the seven following years, Fréminville achieved the rank of Lieutenant only in 1811. A royalist at heart, he welcomed the Bourbon Restoration, but his career did not accelerate; he served on the fluyt Rhône in the Baltic Sea and the frigate Néréide off Western Africa.
In mid-1822, Néréide was in the Caribbean, and Fréminville fell in love with a Creole girl named "Caroline C." at the Îles des Saintes; Néréide was sent to Martinique and then to Guadeloupe meanwhile sailed along the coast of Saintes without stopping with Fréminville aboard. Caroline was misled, thinking that her lover was heading to Europe and would never return, and she committed suicide.
In 1824, Fréminville took command of the fluyt Bonite. The year after, he commanded the fluyt Adour in America. Constantly performing archeology and natural history surveys, he requested in vain command of an exploration mission. It was not until 1827 that he was promoted to Commander. In 1829, Fréminville was appointed to evaluate a chip log invented by Pierre Bouguer, which he deemed unsuitable.
Fréminville retired from the Navy in 1831. The same year, he pseudonymously authored an "Essay on the physical and moral influence of the female costume", in which he stated that female clothes
In his later years, he devoted himself to archeology and natural history, and his credited with founding the archeology of Lower Brittany. In 1836, he donated a luxurious model of a fictitious galley, Minerve, made by famed modelist Augustin Pic, to the Musée national de la Marine. He died on 12 January 1848.
