- Apr 3 Theodoros Kolokotronis, Greek general and leader of the Greek War of Independence (1821-29), born in Ramοvouni, Messenia, Ottoman Empire (d. 1843)
William Wordsworth
Apr 7 William Wordsworth, English poet laureate (The Prelude), born in Cockermouth, Cumberland (d. 1850)
- Apr 9 Thomas Johann Seebeck, German physicist (Seebeck effect), born in Tallinn, Estonia, Russian Empire (d. 1831)
George Canning
Apr 11 George Canning, British Prime Minister (Tory: 1827) and Foreign Secretary, born in London, England (d. 1827)
George Canning
- Apr 19 Georg Abraham Schneider, German horn player and composer, born in Darmstadt, Germany (d. 1839)
- Apr 25 Georg Sverdrup, Norwegian statesman, born in Nærøy, Nord-Trøndelag, Norway (d. 1850)
- Apr 28 Nikita P Panin, Russian diplomat and minister of Foreign affairs, born in Kharkiv, Ukraine (d. 1837)
- Apr 30 David Thompson, English-Canadian explorer (Columbia River), born in Westminster, England (d. 1857)