1799 births

Alphonse Loubat (15 June 1799 – 10 September 1866) was a French inventor who developed improvements in tram and rail equipment, and helped develop tram lines in New York City and Paris.
Loubat was born in Sainte-Livrade-sur-Lot. He went to New York City in 1827 where he helped develop that city's first tramway in 1832. He returned to France and in 1852 developed the grooved rail, which greatly facilitated street railways and tramlines. Besides he planted wine in Brooklin and wrote on wine.He died in Ville-d'Avray. Joseph Florimond Loubat was his son.

Antoine Joseph Jobert de Lamballe (17 December 1799 – 19 April 1867) was a French surgeon. He was born at Matignon, studied medicine at Paris, and in 1830 became surgeon at the Hôpital Saint-Louis. He was elected to the Academy of Medicine in 1840 and to the Academy of Sciences in 1856.
Jobert was a brilliant and resourceful operator, best known for his masterly use of autoplastie, the repair of diseased parts by healthy neighboring tissue, and especially for the operation which he styled élitroplastie, an autoplastic cure of vaginal fistula. He wrote:

Traité théorique et pratique des maladies chirurgicales du canal intestinal (1829)
Etudes sur le système nerveux (1838)
Traité de chirurgie plastique (1849)
De la réunion en chirurgie (1864)

Prosper Menière (18 June 1799 – 7 February 1862) was a French doctor who first identified that the inner ear could be the source of a condition combining vertigo, hearing loss and tinnitus, which is now known as Ménière's disease.

Benoît Paul Émile Clapeyron (French: [klapɛʁɔ̃]; 26 January 1799 – 28 January 1864) was a French engineer and physicist, one of the founders of thermodynamics.

Carl Adolph von Basedow (28 March 1799 – 11 April 1854) was a German physician most famous for reporting the symptoms of what could later be dubbed Graves-Basedow disease, now technically known as exophthalmic goiter.