Paul Morphy (1837-1884)
Jun 22 American chess player considered the greatest of his era (1857-61), born in New Orleans, Louisiana
- Jun 23 Ernest Guiraud, French opera composer (Piccolino; Sylvie), arranger (Bizet), and teacher, born in New Orleans, Louisiana (d. 1892)
- Jun 26 Martin Davis Hardin II, American Brigadier General (Union Army), born in Jacksonville, Illinois (d. 1923)
- Jun 26 Victor Girardey, Brigadier General (Confederate Army), born in Lauw, France (d. 1864)