Stephen Foster (1826-1864)
Jan 13 American composer (Oh! Susanna; Swanee River; Beautiful Dreamer), dies in New York City at 37 [reports vary as to fever, accident, suicide, or some combination]
- Jan 15 Isaac Nathan, British-Australian composer, dies at about 73 [exact birthdate undocumented]
- Jan 16 Anton Schindler, German violinist and biographer (Beethoven), dies at 68
- Jan 23 Michele Puccini, Italian organist and composer (father of Giacomo), dies at 50
- Jan 24 Otto Jonas Lindblad, Swedish composer (Kungssången - Royal Anthem), dies at 54
- Jan 24 Stephen Gardner Champlin, American physician and brigadier general (Union), dies Of his battle wounds at about 36
- Jan 27 Leo von Klenze, German neoclassical architect (Walhalla), dies at 59
- Jan 28 Émile Clapeyron, French engineer and physicist (b. 1799)
- Jan 31 Hamilton Rowan Gamble, American judge, governor of Missouri (1861-64), dies at 65
- Feb 1 Louise Marie Thérèse of Artois, Duchess of Parma and Piacenza, dies at 44
- Feb 3 Jarena Lee, African American travelling minister (1st woman preacher in African Methodist Episcopal Church), dies at 80
- Feb 14 William Dyce, Scottish painter and educator, dies at 57
- Feb 16 Vaclav Jindrich Veit, Czech composer, dies at 58
- Feb 19 William Edwin Baldwin, US Confederate brigadier general, dies in a horse accident at 36
- Feb 21 Jeffery Forrest, US Confederate brigadier general, dies in battle
- Feb 26 Louis-Hippolyte Lafontaine, French Canadian politician (Prime Minister of the Province of Canada), dies at 56
- Mar 3 Ulric Dahlgren, Union colonel, dies in battle at 21
- Mar 4 Thomas Starr King, American Unitarian clergyman and lecturer who advocated for California to remain in the Union (Christianity & Humanity), dies of an illness at 39
- Mar 10 Maximilian II of Bavaria, King of Bavaria (1848-64), dies at 52
- Mar 16 Robert Smith Surtees, British novelist (Jorrocks’s Jaunts and Jollities), dies at 58
- Mar 17 Alexandre Calamo, Swiss painter, etcher and lithographer, dies at 53
- Mar 21 Luke Howard, British manufacturing chemist and meteorologist (nomenclature system for clouds), dies at 91
- Mar 27 Jean-Jacques Ampère, French scholar (b. 1800)
- Mar 30 Louis Schindelmeisser, German clarinetist and composer, dies 52
- Apr 2 Princess Hildegard of Bavaria, seventh child and fourth daughter of Ludwig I of Bavaria and Therese of Saxe-Hildburghausen, dies at 38
- Apr 4 Joseph Pitty Couthouy, American naval officer (b. 1808)
- Apr 12 Thomas Green, US Confederate brigadier general, dies in battle at 50
- Apr 13 Johann Schneider, German composer and organist, dies at 74
- Apr 16 Thomas Blanchard, American machinist and inventor, dies at 75
- Apr 22 Joseph Gilbert Totten, US Union general-major, dies at 75
Abraham Gesner (1797-1864)
Apr 29 Canadian geologist (inventor of kerosene), dies at 66
- Apr 29 Charles-Julien Brianchon, French mathematician (Brianchon's theorem), dies at 80
- May 2 Giacomo Meyerbeer, German opera composer (Gott und die Natur - God and Nature), dies at 72
- May 5 Alexander Hays, US Union-general-major, dies in battle at 44
- May 5 John Marshall Jones, American Brigadier General (Confederate Army), dies in battle at 43
- May 6 Henry Livermore Abbott, US Union brigadier general, dies in battle
- May 6 Micah Jenkins, Confederate brigadier general (friendly fire), dies at 28
- May 8 James Samuel Wadsworth, American politician and major general (Union), dies in battle at 56
- May 8 Leroy Augustus Stafford, Confederate American Brigadier General (Confederate Army), dies from injuries incurred 3 days earlier during the Battle of the Wilderness in northern Virginia, at 42
- May 9 John Sedgwick, American Major General (Union Army), is shot in battle after claiming "they couldn't hit an elephant at this distance" at 50
- May 10 James Clay Rice, lawyer/Union brigadier general, dies in battle at 34
- May 10 Thomas Greeley Stevenson, Union brigadier general, dies at about 27
- May 11 Thomas D. Doubleday, American bookstore owner and Union Army officer, dies after being run over by a horse-drawn coach at 58
- May 12 Abner Monroe Perrin, Confederate brigadier general, dies in battle at 37
J.E.B. Stuart (1833-1864)
May 12 Confederate General in the American Civil War, killed in action at 31
Nathaniel Hawthorne (1804-1864)
May 19 American author (House of 7 Gables, The Scarlet Letter), dies at 59
- May 20 John Clare, English poet (Poems Descriptive of Rural Life and Scenery), dies at 70
- May 26 Charles Sealsfield, Austrian-American writer, dies at 71
- May 28 Henry H Giesy, US Union-brigadier general, dies in battle
- May 28 Simion Bărnuţiu, Romanian philosopher and liberal politician, dies at 55
- May 30 James Barbour Terrill, US attorney/Confederate brigadier general, dies at 26
- Jun 1 Hong Xiuquan, Chinese rebel (b. 1812)
- Jun 1 Solomon George Washington Dill, poor white ally of African Americans, assassinated in his home by white terrorists in SC
- Jun 2 George Pierce Doles, US businessman/Confed brigadier general, dies at 34
- Jun 3 James P. McMahon, US Union colonel (164th NY), dies in the Battle of Cold Harbour at about 29
- Jun 3 Peter A. Porter, US Union colonel (8th NY), dies in the Battle of Cold Harbour at 36
- Jun 4 Nassau William Senior, British economist (New Poor Law 1834), dies at 73
- Jun 5 William Edmonson "Grumble" Jones, American Brigadier General (Confederate Army), dies in battle at 39
- Jun 14 Leonidas Polk, American bishop soldier (Confederate Army major-general), killed in action in Battle of Pine Mt at 58
- Jun 15 Haller Nutt, American rich Southern Plantation owner (Longwood house - largest octagonal house in the US), dies at 48
- Jun 19 George Lincoln Prescott, American Brigadier General (Union Army), dies of injuries at 35
- Jun 26 Tom Hyer, American bare-knuckle boxer (American heavyweight champion 1841-51), dies of edema at 45
- Jun 27 Charles Garrison Harker, US Union-brigadier general, dies at the Battle of Kennesaw Mountain battle at 26
- Jul 6 Samuel Allen Rice, American Brigadier General (Union Army), dies of injuries at 36
- Jul 17 Daniel McCook Jr, American Brigadier General (Union Army), dies at 29
- Jul 17 Dirk Dark Curtius, attorney/liberal minister of Justice, dies at 71
- Jul 22 Ägid Karl Lickl, Austrian guitar virtuoso, pianist, and composer, dies at 60
- Jul 22 James Birdseye McPherson, US Union general-major, dies in The Battle of Atlanta at 35
- Jul 22 William H. T. Walker, American Major General (Confederate Army), killed in action at 47 during the Atlanta Campaign
- Jul 25 Clement H. Stevens, American Brigadier General (Confederate Army), dies at 42
- Jul 27 John Putnam Chapin, American politician and 10th Mayor of Chicago (1846-47), dies at 54
- Jul 27 Margaret E Breckinridge, US nurse/daughter of VP John, dies
- Jul 28 Johann Hermann Kufferath, German composer, dies at 67
- Jul 28 Samuel Benton, US Confederate brigadier general, dies in battle at about 44
- Jul 31 Louis Christophe François Hachette, French publisher (Librairie Hachette), dies at 64
- Aug 5 Griffin A. Stedman, American Brigadier General (Union Army), dies in battle at 26
- Aug 7 Li Xiucheng, late Taiping's Field Marshal and soul person.(b. 1823)
- Aug 10 Thomas Potter Cooke, English actor, first person to portray Frankenstein on stage, dies at 77 [1]
- Aug 12 Sakuma Shōzan, Japanese reformer (b. 1811)
- Aug 15 Daniel Phineas Woodbury, US engineer/Union general-major, dies
- Aug 16 John Randolph Chambliss Jr, American Brigadier-General (Confederate Army), dies in battle at 31
- Aug 16 Victor Girardey, Brigadier General (Confederate Army), dies in battle at 27
- Aug 20 Daniel Chaplin, US Union brigadier general, dies
- Aug 20 John H Kelly, US Confederate brigadier general, dies in battle at 24
- Aug 21 John Calhoun Sanders, Confederate brigadier general, dies in battle at 24
- Aug 31 Ferdinand Lassalle, French socialist and political activist (Allgemeiner), dies at 39
John Hunt Morgan (1825-1864)
Sep 4 American Confederate military leader of 'Morgan's Raiders', killed by Union troops at Greeneville at 39
- Sep 15 John Hanning Speke, British explorer, the first European to reach Lake Victoria in east Africa, dies at 37
- Sep 17 Walter Savage Landor, English poet and writer (Imaginary Conversations), dies at 89
- Sep 19 Archibald Campbell Godwin, Confederate brigadier general, dies in The Third Battle of Winchester at 32 or 33
- Sep 19 David Allen Russell, United States Army officer (Union), dies at the Third Battle of Winchester at 43
- Sep 19 Robert Emmet Rodes, American Civil War Confederate Army Major General, dies at the Third Battle of Winchester at 35
- Sep 23 Sandie [Alexander Swift] Pendleton, American Lieutenant Colonel (Confederate Army), dies at 23
- Sep 28 Peguis, Saulteaux Indian chief (assisted early settlers in Red River, signed The Selkirk Treaty), dies (b. c. 1774) [1]
- Sep 29 Hiram Burnham, American Union army officer (Chancellorsville), dies in Battle of Chaffin's Farm at 49 or 50
- Oct 1 John Dunovant, US Confederate brigadier general, dies in battle
- Oct 1 Juan José Flores, General and first President of Ecuador (1839-1845), dies at 64
- Oct 1 Rose Greenhow, American Confederate spy (b. 1817)
- Oct 4 Joseph Montferrand, French Canadian logger and strong man, dies at 61
- Oct 7 Alexander Gardiner, US Union brigadier general, dies in battle
- Oct 7 John Gregg, American judge/Confederate brigadier general, dies in battle at 36
- Oct 8 Thomas Jonathan Coffin Amory, US Union-brigadier general, dies at about 34
- Oct 10 David Bullock Harris, US Confederate colonel, dies of yellow fever
- Oct 12 Roger B. Taney, 5th Chief Justice of the U.S. Supreme Court (1836-64) who delivered the majority Dred Scott decision, dies at 87
- Oct 18 David Bell Birney, American businessman, lawyer, and Major General (Union Army), dies at 39
- Oct 18 Jacques-François Gallay, French horn player and composer, dies at 68
- Oct 19 Daniel Davidson Bidwell, magistrate/brigadier general, dies in battle at 45
- Oct 20 Stephen Dodson Ramseur, American Major General (Confederate Army), dies at 27
- Oct 24 James Jay Archer, US Confederate brigadier general, dies in battle at 46
William T. Anderson (c. 1840-1864)
Oct 26 American Civil War Pro-Confederate rebel guerrilla leader (Lawrence Massacre, Centralia Massacre), killed in battle by union troops at 23 or 24
- Oct 27 Andreas Randel, Swedish composer, dies at 58
- Nov 3 Antonio Goncalves Dias, Brazilian national poet, dies at sea
- Nov 6 Imam Bondjol, Minangkabau religious leader during the Padri War and against the Dutch in Sumatra, dies at 92
- Nov 8 Juan van Halen, Dutch-Spanish officer and adventurer (fought for Russia and in the Belgium Revolution), dies at 76
- Nov 23 Friedrich Georg Wilhelm von Struve, German-Russian astronomer, dies at 71
- Nov 30 Hiram Bronson Granbury, Confederate brigadier general, dies in the Battle of Franklin at 33
- Nov 30 John Adams, US Confederate brigadier general, dies in the Battle of Franklin at about 39
- Nov 30 Otto French Strahl, US Confederate brigadier general, dies in the Battle of Franklin at 33
- Nov 30 Patrick Ronayne Cleburne, US Confederate brigadier general, dies in the Battle of Franklin at 33
- Dec 2 Archibald Gracie III, Confederate brigadier general, dies in battle at Siege of Petersburg, Virginia aged 32
George Boole (1815-1864)
Dec 8 English mathematician and logician (Boolean algebra), dies at 49
Henry Schoolcraft (1793-1864)
Dec 10 American geographer, geologist and ethnologist who found the source of the Mississippi River, dies at 71
- Dec 21 Archduke Louis of Austria, 14th child of Holy Roman Emperor Leopold II and Feldmarschal-Leutnant of Austrian Imperial Army, dies at 80
- Dec 21 William Henry Fry, American composer (Niagara Symphony), music director (Musical Fund Society), journalist, and music critic, dies of tuberculosis at 51
- Dec 31 George Mifflin Dallas, American politician (11th Vice President of the United States) and United States Minister to Russia, dies at 72
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide