- Jun 4 Régis de Trobriand, French aristocrat, lawyer and Bvt Mjr Gen (Union), born in Tours, France (d. 1897)
- Jun 11 Robert Huston Milroy, American Major General (Union Army), born in Salem, Indiana (d. 1890)
- Jun 19 William Henry Webb, American industrialist and philanthropist, born in NYC, New York (d. 1899)
- Jun 29 Jacob van Zuylen van Nijevelt, Dutch Minister of Foreign Affairs (1852-53), born in Dordrecht, Netherlands (d. 1890)