- Sep 1 Jim O'Rourke, American Baseball HOF left fielder (NL HR leader 1880 Boston Red Caps; NY Giants) and manager (Buffalo Bisons 1881-84, Washington Sens 1893), born in East Bridgeport, Connecticut (d. 1919)
- Sep 2 A. G. Spalding, American Baseball HOF pitcher, manager and executive (NL wins leader 1871–76; President, co-owner Chicago White Stockings; co-founder of Spalding sporting goods company), born in Byron, Illinois (d. 1915)
- Sep 2 Eugene Field, author/journalist (Little Boy Blue)
- Sep 2 Woldemar Voigt, German physicist (d. 1919)
- Sep 4 Luigi Cadorna, Italian fieldmarshal (WW I-Caporetto), born in Verbania, Kingdom of Sardinia (d. 1928)
- Sep 6 Louis Apol, Dutch painter, etcher and literary, born in The Hague, Netherlands (d. 1936)
- Sep 9 Harishchandra, Indian poet, dramatist and commonly referred as "father of modern Hindi", born in Vārānasi, India (d. 1885)
- Sep 9 Jane Ellen Harrison, British anthropologist and linguist, born in Cottingham, Yorkshire (d. 1928)
- Sep 9 Leopoldo Miguez, Brazilian composer, born in Niterói, Rio de Janeiro (d. 1902)