Historical Events
- Apr 15 1st American school for the deaf opens (Hartford, Connecticut)
- Apr 15 The American Asylum [now American School for the Deaf (ASD)], 1st permanent US school for deaf founded by Rev. Thomas Gallaudet, Dr. Mason Cogswell, and teacher Laurent Clercn (West Hartford, Connecticut,)
- Apr 22 Curacao prohibits use of white paint due to fierce sunlight
Famous Birthdays
- Apr 2 Teodulo Mabellini, Italian composer, born in Pistoia, Grand Duchy of Tuscany (d. 1897)
- Apr 4 John Wilson Sprague, American Brevet Major General (Union Army), born in White Creek, New York (d. 1893)
- Apr 13 Alphonse Wauters, Belgian historian and archivist (Brussels), born in Brussels, Belgium (d. 1898)
- Apr 18 George Henry Lewes, English philosophical writer (Life of Goethe), born in London (d. 1878)
- Apr 19 John Philip "Spanish John", Scottish painter, born in Aberdeen (d. 1865)
Famous Deaths
Charles Messier (1730-1817)
Apr 12 French astronomer, comet hunter and cataloguer of nebulae and star clusters, now referred to as "M objects", dies at 86
