Henry Addington (1757-1844)
Feb 15 1st Viscount Sidmouth, British Prime Minister (Tory: 1801-04), dies at 86
- Feb 16 Heinrich David Stölzel, German horn player who developed the first valve for brass instruments, dies at 66
- Feb 16 Joseph Crosfield, English soap and alkali manufacturer, dies at 51
- Feb 27 Nicholas Biddle, US lawyer/diplomat/statesman/financier, dies at 85
- Feb 28 Abel P. Upshur, Secretary of State, dies in explosion on USS Princeton
- Feb 28 Thommas W. Gilmer, Navy Secretary, dies in explosion on USS Princeton
- Feb 29 Thaddäus Weigl, German-Austrian composer, publisher, and conductor, dies at 67
- Mar 6 Gabriel Duvall, Justice of the U.S. Supreme Court (1811-35), dies at 91
- Mar 8 Charles XIV [Jean Bernadotte], French-born King of Sweden & Norway (1818-44), Marshall of France, dies at 81
- Mar 21 Leopold van Sasse van Ysselt, Dutch nobleman and politician, dies at 65
- Mar 24 Bertel Thorvaldsen, Danish sculptor (Dying Lion), dies at 73
- Apr 4 Charles Bulfinch, 1st US professional architect (Massachusetts State House), dies at 80
- Apr 6 Francis Johnson, American keyed Kent bugle virtuoso, violinist, bandleader, and composer, dies at 51 [1]
- Apr 8 Ignaz Franz von Mosel, Austrian composer, dies at 72
- Apr 22 Henri-Montan Berton, French composer, dies at 76
- May 2 William Beckford, British writer (Vathek), politician, plantation owner, and art collector, dies at 83
- May 18 Richard McCarty, American politician, dies at 64
- May 21 Guiseppi Baini, Italian composer and priest, dies at 68
- May 24 William Crockford, clubman/gambler, dies
- Jun 3 Louis Antoine, French Duke of Angoulême and General of France, dies at 68
- Jun 15 Thomas Campbell, Scottish poet (Ye Mariners of England), dies at 66
- Jun 19 Étienne Geoffroy Saint-Hilaire, French naturalist, dies at 72
Joseph Smith (1805-1844)
Jun 27 American founder of the Church of Jesus Christ of Latter-day Saints, shot by a mob at 38
- Jul 11 Evgeny Baratynsky, Russian poet (b. 1800)
- Jul 12 Charles-Louis Panckoucke, French publisher, dies at 63
- Jul 13 Johann Baptist Gansbacher, Austrian composer, dies at 66
- Jul 15 Claude Charles Fauriel, French historian (b. 1772)
- Jul 19 Heinrich Domnich, German hornist and composer, dies at 77
- Jul 23 Christian Gobrecht, 4th US chief engraver (1840-44), dies in office
John Dalton (1766-1844)
Jul 27 English physicist and chemist who developed the atomic theory of matter and researched colour blindness, dies at 77
- Jul 28 Joseph Bonaparte, older brother of Napoleon I and King of Naples and Spain, dies at 76
- Jul 29 Franz Xaver Wolfgang Mozart, Austrian composer and 6th child of Wolfgang Amadeus Mozart, dies at 53
- Aug 4 Jakob Aall, Norwegian journalist and statesman, dies at 71
- Aug 10 Grand Duchess Alexandra Nikolaevna of Russia, youngest daughter and fourth child of Tsar Nicholas I, Emperor of Russia, and his wife, Princess Charlotte of Prussia, dies at 19
- Aug 11 Jernej Kopitar, Slovene philologist and linguist (Slavic Grammatica), dies at 63
- Aug 14 Henry Francis Cary, translator (Dante), dies
- Aug 29 Edmund Ignatius Rice, Irish founder of the Christian Brothers and Presentation Brothers (b. 1762)
- Aug 30 Francis Baily, English astronomer and describer of "Baily's Beads" during solar eclipse, dies at 70
- Sep 14 Oliver Holden, American composer, dies at 78
- Sep 23 Alexander von Benckendorff, Russian general and statesman (b. 1783)
- Sep 27 Charles Nodier, French writer (History du chien the Brisquet), dies at 63
- Sep 28 Pyotr Aleksandrovich Tolstoy, Russian general and statesman (b. 1769)
- Oct 12 Claude Tillier, French journalist and writer (My Uncle Benjamin), dies at 43
- Nov 1 August Ferdinand Haeser, German composer, dies at 45
- Nov 14 Flora Tristan, French writer and social activist, dies at 41
- Nov 14 John Abercrombie, Scottish physician, dies at 64
- Nov 21 Ivan Krylov, Russian fabulist (b. 1769)
- Nov 25 Augustus Callcott, English landscape painter, dies at 65
- Nov 29 Princess Sophia of Gloucester, great-granddaughter of King George II of Great Britain and niece of King George III, dies at 71
- Dec 2 Eustachy Erazm Sanguszko, Polish general and politician, dies at 76
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide