Events in History
- Sep 9 Charles Durant, 1st US aeronaut, flies a balloon from Castle Garden, NYC to Perth Amboy, NJ
- Sep 15 First National Negro Convention begins in Philadelphia
- Sep 15 First passenger to be killed by a railway train (William Huskisson, England)
- Sep 15 Duke of Wellington opens Liverpool & Manchester Railway
- Sep 16 Oliver Wendell Holmes writes poem "Old Ironsides" as tribute to the 18th-century USS Constitution
- Sep 20 1st Negro Convention of Free Men agree to boycott slave-produced goods
- Sep 23 Dutch troops occupy Brussels
- Sep 27 Dutch army leaves Brussels, after hundreds killed
Birthdays in History
- Sep 2 William P. Frye, American politician (d. 1911)
Frederic Mistral
Sep 8 Frederic Mistral, French Provencal poet (Nobel 1904), born in Maillane, France (d. 1914)

Frederic Mistral
- Sep 12 William Sprague IV, American politician and Governor of Rhode Island (1859-63), born in Cranston, Rhode Island (d. 1915)
- Sep 13 Marie von Ebner-Eschenbach, Austrian writer (The Child of the Parish), born in Zdislavič, Moravia (d. 1916)
- Sep 15 José de la Cruz Porfirio Díaz Mori, President of Mexico (1877-1911), born in Oaxaca, Mexico (d. 1915)
- Sep 27 William Babcock Hazen, American Major General (Union Army), born in West Hartford, Vermont (d. 1887)
- Sep 29 John Parker Hawkins, American Brevet Major General (Union Army), born in Indianapolis, Indiana (d. 1914)
Weddings in History
- Sep 14 Princess WFLC Marianne marries Albrecht of Prussia