- Apr 1 Frederick Maurice, English theologian (Church of England), dies at 66
- Apr 1 William Frederick Horry, English convicted murderer, dies at 28
Samuel Morse (1791-1872)
Apr 2 American painter and inventor of the electric telegraph and Morse Code, dies at 80
- Apr 9 Erastus Corning, American businessman and politician (Mayor of Albany, New York), dies at 77
- Apr 12 Nikolaos Mantzaros, Italian-Greek composer, dies at 76
- Apr 20 Ljudwit Gaj, Croatian writer and poet of the Illyrian movement (Pjesma iz Zagorja), dies at 62
- Apr 27 Ion Heliade-Radulescu, Romanian politician and author, dies at 70
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide