- Apr 4 (Charles) Jerome Hopkins, American composer, pianist, critic, and musical education advocate, born in Burlington, Vermont (d. 1898)
- Apr 24 Jeltje de Bosch Kemper, Dutch feminist, born in Amsterdam (d. 1916)
- Apr 26 Erminnie Adelle Platt, American anthropologist (first woman to specialize in ethnographic field work), born in Marcellus shale, New York (d. 1886)