Historical Events
- Apr 10 "Big Ben", a 13.76 tonne bell, is recast at the Whitechapel Bell Foundry
- Apr 12 1st US billiards championship, Michael J Phelan wins in Detroit
- Apr 15 Battle of Azimghur, Mexicans defeat Spanish loyalists
- Apr 16 The Wernerian Natural History Society, a former Scottish learned society, is wound up
Famous Birthdays
- Apr 1 Arnold Aletrino, Dutch physician-criminologist/author (From Life)
- Apr 1 Gaetano Mosca, Italian sociologist (Circulation of Elite)
- Apr 3 Matthew Ricketts, 1st African American man elected to Neb State Legislature, born in Henry County, Kentucky (d. 1917)
- Apr 4 Remy de Gourmont, French poet, born in Bazoches-en-Houlmes, France (d. 1915)
- Apr 7 Adrien H Gerhard, Dutch socialist politician (SDAP)
- Apr 15 Émile Durkheim, French sociologist (Division du travail social), born in Épinal, France (d. 1917)
- Apr 19 May Robson [Mary J Robison], Australian actress (Apple Annie), born in Moama, New South Wales, Australia (d. 1942)
- Apr 19 Siegfried Ochs, German composer, born in Frankfurt, Germany (d. 1929)
- Apr 20 Auguste Chapuis, French composer, born in Dampierre-sur-Salon, France (d. 1933)
- Apr 22 Ethel Smyth, English composer, born in Sidcup, Kent (d. 1944)
- Apr 23 Max Planck, German physicist, father of Quantum Physics (Planck Constant, Nobel 1918), born in Kiel, Duchy of Holstein (d. 1947)
- Apr 30 Mary Scott Lord Dimmick Harrison, 1st lady (1889-1893)