- Oct 3 Mikhail Lermontov, Russian poet and writer (Demon & other poems), born in Moscow (d. 1841)
- Oct 11 Jean Baptiste Lamy, 1st Archbishop of Santa Fe (1853-85), born in Lempdes, Puy-de-Dôme, France (d. 1888)
- Oct 25 Prince Louis, French Duke of Nemours, born in Palais Royal, Paris (d. 1896)
- Oct 27 Daniel H. Wells, Mormon leader and 3rd Mayor of Salt Lake City, born in Trenton, New York (d. 1891)