Historical Events
- Apr 2 H L Fizeau & Leon Foucault take 1st photo of the Sun
- Apr 10 More than 1,000 buildings damaged by fire in Pittsburgh, Pennsylvania
- Apr 18 Whaling ship the Manhattan captained by Mercator Cooper is the first ship officially permitted visit Edo, Japan, in 220 years rescuing shipwrecked sailors
- Apr 29 Macon B. Allen & Robert Morris Jr are 1st African Americans to open a law practice in the US
Famous Birthdays
- Apr 5 Jules Cambon, French ambassador, to U.S. (1897), Spain (1902–07) and Germany (1907–14), born in Paris (d. 1935)
- Apr 15 Dave Gregory, Australian cricket batsman (Australia's 1st Test captain; 3 Tests; NSW CA), born in Fairy Meadow, Australia (d. 1919)
- Apr 17 Isabel Barrows, American editor and penologist (Conference on Negro Question), born in Irasburg, Vermont (d. 1913)
- Apr 18 Wilhelm Gericke, Austrian composer, born in Schwanberg, Austria (d. 1925)
- Apr 24 Carl Spitteler, Swiss poet (Prometheus & Epimetheus; Nobel 1919), born in Liestal, Switzerland (d. 1924)
Famous Deaths
- Apr 2 Philip Charles Durham, Royal Navy Admiral (b. 1763)
- Apr 12 Hendrik Marcus de Kock, Dutch general and politician (Lieutenant Governor-General of the Dutch East Indies 1826-30), dies at 65
- Apr 18 Nicolas Théodore de Saussure, Swiss chemist, dies at 77
- Apr 25 Thomas Duncan, Scottish painter, dies at 37
