Historical Events
- Sep 23 Battle of Assaye: British-Indian forces beat Maratha Army
Famous Birthdays
- Sep 1 Jacobus T Abels, Dutch painter
- Sep 3 Alexander Gurilyov, Russian composer, born in Moscow, Russia (d. 1858)
- Sep 3 Prudence Crandall, American educator and founder of School for "young ladies of colour", born in Hopkinton, Rhode Island (d. 1890)
- Sep 4 Sarah Childress Polk, Wife of the 11th President of the United States, James K. Polk (1845-1849), born in Murfreesboro, Tennessee (d. 1891)
- Sep 19 Maria Anna of Savoy, Empress of Austria and Queen of Hungary and Bohemia, born in Palazzo Colonna, Rome, Papal States (d. 1884)
- Sep 27 Samuel Francis DuPont, American Rear Admiral (Union Navy), born in Bayonne, New Jersey (d. 1865)
- Sep 28 Prosper Mérimée, French author (Carmen), born in Paris (d. 1870)
- Sep 29 Charles-Francois Sturm, French mathematician (Sturm's Theorem)
- Sep 29 Mercator Cooper, American sea captain (d. 1872)
Famous Deaths
- Sep 5 Francois Devienne, composer, dies at 44
- Sep 9 Armand-Emmanuel Trial, composer, dies at 32
- Sep 13 John Barry, 1st American commodore, dies
- Sep 15 Gian Francesco Albani, Italian Catholic cardinal (b. 1719)
- Sep 16 Nicolas Baudin, French explorer (b. 1754)
- Sep 17 Franz Xaver Sussmayr, composer, dies
- Sep 20 Robert Emmet, Irish nationalist, executed
- Sep 30 Charles Broche, composer, dies at 51