Ernesto Teodoro Moneta (1833-1918)
Sep 20 Italian journalist, soldier and pacifist (Nobel Peace Prize 1907), born in Milan, Lombardy
- Sep 21 Josef Richard Rozkošný, Czech composer, born in Prague (d. 1913)
- Sep 22 Stephen Dill Lee, American 1st president of Mississippi State University, Lt General in Confederate Army, born in Charleston, South Carolina (d. 1908)
- Sep 24 Henry Alanson Barnum, American Brevet Major General (Union Army), born in Jamesville, New York (d. 1892)
- Sep 28 James Deering Fessenden, American lawyer, politician, and Brevet Major General (Union Army), born in Westbrook, Maine (d. 1862)
- Sep 30 Ferdinand von Saar, Austrian novelist, playwright and poet, born in Vienna, Austria (d. 1906)