Historical Events
- Apr 9 Danzig (Gdańsk) dike break flood kills 1,200
- Apr 13 The Roman Catholic Relief Act passed by the British Parliament; it was the culmination of the process of Catholic Emancipation throughout the UK.
- Apr 25 Charles Fremantle arrives in HMS Challenger off the coast of modern-day Western Australia prior to declaring the Swan River Colony for the United Kingdom
- Apr 28 Dutch parliament accepts new press laws
Famous Birthdays
- Apr 10 William Booth, English preacher and founder (Salvation Army), born in Sneinton, Nottingham, England (d. 1912)
- Apr 15 Mary Harris Thompson, 1st American woman surgeon, born in Fort Ann, New York (d. 1895)
- Apr 24 George Peabody Estey, American Brigadier General (Union Army), born in Hillsborough County, New Hampshire (d. 1881)