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  The pseudonym "Caroline de L." that Fréminville used was later interpreted as a hommage to the Creole of the Saintes. 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. Fréminville is commemorated in the scientific name of a species of Central American snake, "Stenorrhina freminvillei".