Historical Events
- Sep 4 First US religious newspaper (Religious Remembrancer (Christian Observer))
- Sep 7 "Uncle Sam" 1st used to refer to the US, by Troy Post of New York
- Sep 10 American Naval Commander Oliver Hazard Perry defeats the British in Battle of Lake Erie
Victory in Battle
Sep 30 Battle of Bárbula: Simón Bolívar defeats Santiago Bobadilla

Simón Bolívar
Famous Birthdays
Mark Hopkins
Sep 1 Mark Hopkins, American business tycoon and railroad executive (Central Pacific Railroad), born in Henderson, New York (d. 1878)

Mark Hopkins
- Sep 11 Conrad Feger Jackson, American Brigadier General (Union Army), born in Alsace Township, Pennsylvania (d. 1862)
- Sep 13 John Sedgwick, American Major General (Union Army), who is best remembered for his famous last words "they couldn't hit an elephant at this distance" before being shot in battle, born in Cornwall, Connecticut (d. 1864)
- Sep 28 Anton Wallerstein, German composer, born in Dresden, Germany (d. 1892)