- Oct 3 Oliver Cowdery, American religious leader (Later Day Saint apostle), born in Wells, Vermont (d. 1850)
- Oct 6 Andreas Randel, Swedish composer, born in Ramdala, Blekinge, Sweden (d. 1864)
- Oct 11 Alexander Karađorđević, Prince of Serbia (1842-58), born in Topola, Serbia (d. 1885)
- Oct 14 Preston King, U.S. Senator from New York (1857-63), born in Ogdensburg, New York (d. 1865)
- Oct 16 William Pitt Fessenden, American politician, Secretary of the Treasury during Civil War (Union), born in Boscawen, New Hampshire (d. 1869)
- Oct 18 John Breckinridge Grayson, Brig Genl (Confederate Army), (d. 1861)
- Oct 25 Max Stirner [Johann Kaspar Schmidt], German philosopher (Der Einzige), born in Bayreuth, Bavaria (d. 1856)
- Oct 28 Alphonse Pyramus de Candolle, French-Swiss botanist, born in Paris (d. 1893)