- Jan 1 Sándor Petőfi, Hungarian poet (A virágnak megtiltani nem lehet - You Cannot Forbid the Flower), and revolutionary, born Kiskőrös, Kingdom of Hungary, Austrian Empire (d. 1849)
- Jan 3 Jaak-Nikolaas Lemmens, Flemish composer, born in Zoerle-Parwijs, Belgium (d. 1881)
- Jan 4 Otto van Rees, Dutch Governor-general of Dutch East Indies (1884-88), born in Culemborg, Netherlands (d. 1892)
- Jan 4 Peter Joseph Osterhaus, German-American diplomat and Major General (Union Army), born in Koblenz, Germany (d. 1917)
- Jan 5 William Rockstro, English musicologist & composer, born in Cheam, Sutton (d. 1895)
Alfred Russel Wallace (1823-1913)
Jan 8 British naturalist, explorer and co-discoverer of the theory of evolution through natural selection, born in Usk, Monmouthshire, Wales
- Jan 21 Alexandre Goria, French pianist and composer, born in Paris, France (d. 1860)
- Jan 27 Édouard Lalo, French composer (Symphonie Espagnole; Le roi d'Ys), born in Lille, France (d. 1892)
- Jan 29 Franklin Gardner, American Major General (Confederate Army), born in New York City (d. 1873)
- Feb 3 Spencer Fullerton Baird, American naturalist and ornithologist (Wood's Hole Station), born in Reading, Pennsylvania (d. 1888)
- Feb 7 Richard Genee, Austrian playwright, librettist, and composer, born in Danzig (d. 1895)
- Feb 15 Li Hung-Tshang, Chinese modernizing politician and general (governor-general of Zhili province), born in Hefei, Anhui province, China (d. 1901)
- Feb 16 John Daniel Imboden, Brigadier General (Confederate Army), (d. 1895)
- Feb 27 Ferdinand Van Derveer, American lawyer and Brigadier General (Union Army), born in Middletown, Ohio (d. 1892)
- Feb 27 William Buel Franklin, American Major General (Union Army), born in York, Pennsylvania (d. 1903)
- Feb 28 Ernest Renan, French philosopher, historian and scholar of religion, born in Tréguier, France (d. 1892)
- Mar 3 Gyula Andrássy Sr, Prime Minister of Hungary (1867-71), born in Kassa, Austrian Empire (d. 1890)
- Mar 12 William Flank Perry, Brigadier General (Confederate Army), (d. 1901)
- Mar 14 Roswell S. Ripley, Brigadier General (Confederate Army), born in Worthington, Ohio (d. 1887)
- Mar 14 Théodore de Banville, French writer, born in Moulins, France (d. 1891)
- Mar 16 William Henry Monk, English composer and organist (Eventide), born in London, England (d. 1889)
- Mar 19 Adelgunde of Bavaria, German princess and wife of Duke of Modena, born in Würzburg, Bavaria (d. 1914)
- Mar 19 Cornelis Ascanius van Sypesteyn, Dutch governor of Surinam (1873-82) (d. 1892)
- Mar 20 John Echols, Brigadier General (Confederate Army), (d. 1896)
- Mar 20 Ned Buntline, American publisher (d. 1886)
- Mar 23 Schuyler Colfax, American politician (17th US Vice President 1869-73), born in New York City (d. 1885)
- Mar 25 William T. Thompson American Martin, Major General (Confederate Army), born in Glasgow, Kentucky (d. 1910)
- Mar 27 Samuel Kosciusko Zook, American Brevet Major General (Union Army), born in Tredyffrin Township, Pennsylvania (d. 1863)
- Mar 30 Joseph Farmer Knipe, American Brigadier General (Union Army), born in Mount Joy, Pennsylvania (d. 1901)
- Mar 31 Ernest Doudart de Lagrée, French naval officer and entomologist (led the Mekong River expedition 1866-68), born in Saint-Vincent-de-Mercuze, France (d. 1868)
- Apr 1 Simón Bolívar Buckner, Lt Gen (Confederate Army), (d. 1914)
Boss Tweed (1823-1878)
Apr 3 American politician and corrupt New York fraudster, born in NYC, New York
- Apr 4 Carl Wilhelm Siemens, German engineer and inventor (laid undersea cables), born in Gehrden, Hanover, Germany (d. 1883)
- Apr 4 Robert Byington Mitchell, American Brigadier General (Union Army), born in Mansfield, Ohio (d. 1882)
- Apr 6 Joseph Medill, Canadian newspaper editor, owner and politician (co-owned Chicago Tribune, Mayor of Chicago 1871-73), born in Saint John, New Brunswick (d. 1899)
- Apr 10 Thomas Reade Rootes Cobb, Brigadier General (Confederate Army), born in Jefferson County, Georgia (d. 1862)
- Apr 12 Aleksandr Ostrovsky [Alexander Ostrovsky], Russian playwright (Artists & Admirers), born in Moscow, Russian Empire (d. 1886)
- Apr 16 Ferdinand Eisenstein, German mathematician (number theory), born in Berlin, Prussia (d. 1852)
- Apr 16 Mother Joseph of the Sacred Heart [Esther Pariseau], Canadian religious leader (US capitol), born in Saint-Elzéar, Quebec, Canada (d. 1902)
- Apr 16 Orlando Bolivar Wilcox, American Brevet Major General (Union Army), born in Detroit, Michigan (d. 1907)
- Apr 22 Alfred Gibbs, American Major General (Union Army), born in Long Island, New York (d. 1868)
- Apr 23 Abdulmejid I, 31st Sultan of Ottoman Empire, born in Istanbul, Ottoman Empire (d. 1861)
- Apr 30 George Campbell, 8th Duke of Argyll and Secretary of State for India (1868-74, 1880-85), born in Ardencaple Castle, Dunbartonshire (d. 1900)
- May 5 James Allen Hardie, American Brevet Major General (Union Army), born in NYC, New York (d. 1876)
- May 10 John Sherman, MC (Union), (d. 1900)
- May 11 Alfred Stevens, Belgian painter, born in Brussels, Belgium (d. 1906)
- May 17 Charlotte Sainton-Dolby, English contralto and composer, born in London (d. 1885)
- May 22 Isabella Glyn Dallas, British Shakespearean actress, born in Edinburgh, Scotland (d. 1889)
- May 22 Solomon Bundy, American politician (Member of the U.S. House of Representatives from New York's 21st district), born in Oxford, New York (d. 1889)
- May 27 John Gray Foster, American Major General (Union Army), born in Whitefield, New Hampshire (d. 1874)
- May 29 John H. Balsley, American carpenter and inventor (a practical folding wooden stepladder), born in Connellsville, Fayette County, Pennsylvania (d. 1895)
- Jun 2 Gédéon Ouimet, French Canadian politician (d. 1905)
- Jun 5 George Thorndike Angell, American lawyer and advocate for the humane treatment of animals (ASPCA), born in Southbridge, Massachusetts (d. 1909)
- Jun 8 Robert Morris, 1st successful African American lawyer in the US and Abolitionist, born in Salem, Massachusetts (d. 1882)
- Jun 11 James Lawson Kemper, Major General (Confederate Army), born in Madison County, Virginia (d. 1895)
- Jun 13 Gustave Paul Cluseret, French Brigadier General (Union Army), born in Suresnes, France (d. 1900)
- Jun 17 John Henry Hobart Ward, American Brigadier General (Union Army), born in NYC, New York (d. 1903)
- Jun 20 Jesse Lee Reno, American Major General (Union Army), born in Wheeling, West Virginia (d. 1862)
- Jun 21 Edward Elmer Potter, American Brevet Major General (Union Army), born in NYC, New York (d. 1889)
- Jun 21 Jean Chacornac, French astronomer, born in Lyon, France (d. 1873)
- Jun 25 James Dunwoody Bulloch, Confederacy's chief foreign agent in Great Britain during the American Civil War, born in Savannah, Georgia (d. 1901)
- Jun 26 Frederick Bowen Jewson, Scottish composer, born in Edinburgh, Scotland (d. 1891)
- Jun 30 Dinshaw Maneckji Petit, Parsi entrepreneur and founder of the first textile mills in India, born in Bombay, British India (d. 1901)
- Jun 30 Hendrik Jan Schimmel, Dutch writer and dramatist (2 Tudors), born in 's-Graveland, North Holland (d. 1906)
- Jul 16 James Isham Gilbert, American Brevet Major General (Union Army), born in Louisville, Kentucky (d. 1884)
- Jul 18 Leonard Fulton Ross, American lawyer, probate judge, and Brigadier General (Union Army), born in Lewistown, Illinois (d. 1901)
- Jul 19 George Henry Gordon, American lawyer and Brevet Major General (Union Army), born in Charlestown, Boston, Massachusetts (d. 1886)
- Jul 23 Coventry Patmore, English poet and critic (The Angel in the House), born in Essex, England (d. 1896)
- Aug 3 Francisco Barbieri, Spanish zarzuela opera composer (El Diablo en El Poder), born in Madrid, Spain (d. 1894)
- Aug 3 Thomas Francis Meagre, Irish nationalist and Brigadier General (Union Army), born in Waterford, Ireland (d. 1867)
- Aug 4 Oliver Hazard Perry Throck Morton, American politician (Governor of Indiana), born in Salisbury, Indiana (d. 1877)
- Aug 7 Faustina Hasse Hodges, English-American composer, born in Malmesbury, England (d. 1895)
- Aug 8 Theodule Augustin Ribot, painter
- Aug 9 Daniel M. Frost, American Brigadier General (Confederate Army), born in Duanesburg, New York (d. 1900)
- Aug 10 Charles Keene, Hornsey, artist
- Aug 10 Charles Thomas Campbell, American Brigadier General (Union Army), born in St. Thomas Township, Pennsylvania (d. 1895)
- Aug 10 Hugh Stowell Brown, Manx preacher (d. 1886)
- Aug 11 Charlotte Mary Yonge, England, writer (Heir of Redclyffe)
- Aug 13 Goldwin Smith, English historian and journalist, born in Reading, Berkshire (d. 1910)
- Aug 14 Karel Miry, Belgian composer (De Vlaamse Leeuw), born in Ghent (d. 1889)
- Aug 15 Orris Sanford Ferry, American lawyer, politician and Brevet Major General (Union Army), born in Bethel, Connecticut (d. 1875)
- Aug 18 Willem J F Nuyens, Dutch physician, historian
- Aug 25 John Newton, American engineer and Major General (Union Army), born in Norfolk, Virginia (d. 1895)
- Aug 26 Wilhelm Troszel, Polish operatic bass, composer and voice teacher, born in Warsaw (d. 1887)
- Aug 31 Galusha Aaron Grow, American politician, born in Ashford, Connecticut (d. 1907)
- Sep 10 Adolf von Doss, German composer, born in Pfarrkirchen, Germany (d. 1886)
- Sep 16 Francis Parkman, American historian and author (Oregon Trail), born in Boston, Massachusetts (d. 1893)
- Sep 16 Michael Obrenovic, ruler of Serbia (1839-42,1860-68), born in Kragujevac, Serbia (d. 1868)
- Sep 25 Thomas John Wood, American Major General (Union Army), born in Munfordville, Kentucky (d. 1906)
- Sep 26 Ivan Aksakov, Russian journalist (Denj, Moskvitsh), born in Nadezhdino, Belebey Uyezd, Orenburg Governorate (d. 1889)
- Sep 28 Alexandre Cabanel, French painter (Birth of Venus), born in Montpellier, France (d. 1889)
Mary Ann Shadd Cary (1823-1893)
Oct 9 American-Canadian publisher and anti-slavery campaigner, 1st African American newspaper publisher ('Provincial Freeman'), born in Wilmington, Delaware
- Oct 13 Immanuel Faisst, German composer, born in Esslingen am Neckar, Stuttgart, Germany (d. 1894)
- Oct 20 Thomas Hughes, English politician and author (Tom Brown's School Days), born in Uffington (d. 1896)
- Oct 21 Pasqual Juan Emilio Arrieta y Corera, composer
- Oct 26 Karl Weinhold, German sociologist (founder of Journal of the Association of Folklore), born in Dzierżoniów, Poland (d. 1901)
- Nov 4 Karel Komzák I, Bohemian organist, conductor, military bandleader, and composer, born in Netěchovice, Kingdom of Bohemia (now Czech Republic) (d. 1893) [1]
- Nov 9 William Henry Forney, Brigadier General (Confederate Army), born in Lincolnton, North Carolina (d. 1894)
- Nov 14 Robert Fruin, Dutch historian (80 year war), born in Rotterdam, Netherlands (d. 1899)
- Nov 22 Nathan Kimball, American physician, politician, postmaster, and Brevet Major General (Union Army), born in Fredericksburg, Indiana (d. 1898)
- Nov 25 (Heinrich) "Henry" Wirz, Swiss-American Confederate army officer (Commander of Camp Sumter prisoner-of-war facility), born in Zurich, Switzerland (d. 1865)
- Nov 25 Joseph Alexander Cooper, American civil servant and Brevet Major General (Union Army), born in Whitley County, Kentucky (d. 1910)
- Nov 26 Thomas Tellefsen, Norwegian pianist and composer, born in Trondheim, Norway (d. 1874)
- Dec 1 Ernest Reyer, French opera composer, born in Marseilles, France (d. 1909)
- Dec 6 Max Müller, German-born British orientalist, born in Dessau, German Federation (d. 1900)
- Dec 7 Leopold Kronecker, German mathematician (Tensor of Kronecker), born in Liegnitz, Province of Silesia, Prussia (d. 1891)
- Dec 10 Theodore Furchtegott Kirchner, German composer, born in Neukirchen, Germany (d. 1903)
- Dec 10 Wilhelm Kuhe, German composer, born in Prague, Czech Republic (d. 1912)
- Dec 15 Friedrich Gottlieb Schwencke, German organist and composer, born in Hamburg, Germany (d. 1896)
- Dec 21 Jean Henri Fabre, French naturalist and entomologist (insects & spiders), born in Saint-Léons, Aveyron, France (d. 1915)
- Dec 23 Alexandru Flechtenmacher, Romanian composer, born in Iaşi, Romania (d. 1898)
- Dec 25 Preston Smith, Brigadier General (Confederate Army), (d. 1863)
Mackenzie Bowell (1823-1917)
Dec 27 5th Prime Minister of Canada (1894-96), born in Rickinghall, England
- Dec 28 Thomas Alexander Scott, American businessman and Assistant Secretary of War (Civil War), born in Peters Township, Pennsylvania (d. 1881)