January 25 - Theo van Gogh, Dutch art dealer (b. 1857) January 26 – Nicolaus Otto, German engineer (b. 1832) February 4 – Pelagio Antonio de Labastida y Dávalos, Roman Catholic archbishop and Mexican politician who served as regent during the Second Mexican Empire, 1863-1864 (d. 1816) February 10 – Sofia Kovalevskaya, Russian mathematician (b. 1850) February 13 – David Dixon Porter, American admiral (b. 1813) February 14 – William Tecumseh Sherman, American general (b. 1820) March 13 – Théodore de Banville, French writer (b. 1823) March 15 – Sir Joseph Bazalgette, English civil engineer (b. 1819) March 17 – Eduard Clam-Gallas, Austrian general (b. 1805) March 27 – James A. Ekin, Union Army general (b. 1819) March 29 – Georges Seurat, French painter (b. 1859) April 2 – Ahmed Vefik Pasha, Turkish statesman (b. 1823) April 7 – P. T. Barnum, American showman (b. 1810) April 9 – George Cavendish-Bentinck, British Conservative politician (b. 1821) April 24 – Helmuth von Moltke the Elder, Prussian field marshal (b. 1800) April 25 – Nathaniel Woodard, English educationalist (b. 1811) May 2 – Albany James Christie, British Jesuit priest and academic (b. 1817) May 8 Helena Blavatsky, Russian-born author, theosophist (b. 1831) Sir John Robertson, Australian politician, Premier of New South Wales (b. 1816) May 16 – Ion C. Brătianu, 2-Time Prime Minister of Romania (b. 1821) June 6 – John A. Macdonald, 1st Prime Minister of Canada, Father of Confederation (b. 1815) June 19 – David Settle Reid, American politician (b. 1813) June 23 – Samuel Newitt Wood, American politician (b. 1825) June 24 – Wilhelm Eduard Weber, German physicist (b. 1804) July–December July 1 – Mihail Kogălniceanu, 3rd Prime Minister of Romania (b. 1817) July 4 – Hannibal Hamlin, 15th Vice President of the United States (b. 1809) July 20 – Sir Frederick Weld, 6th Prime Minister of New Zealand (b. 1823) July 24 – Hermann Raster, German-born Forty-Eighter, editor-in-chief of the Illinois Staats-Zeitung (b. 1827) August 12 – James Russell Lowell, American poet and essayist (b. 1819) August 14 – Sarah Childress Polk, First Lady of the United States (b. 1803) August 27 – Samuel C. Pomeroy, American politician, railroad executive (b. 1816) August 29 – Pierre Lallement, French inventor of the bicycle (b. 1843?) September 4 – José María Urvina, 5th President of Ecuador (b. 1808) September 7 – Lorenzo Sawyer, 9th Chief Justice of the Supreme Court