Agustina de Aragón, Spanish heroine (b. 1786) June 10 – John Walbach, French baron and officer in the United States Army, with a military career spanning over 57 years (b. 1766) June 30 – Alcide d'Orbigny, French naturalist (b. 1802) July–December July 4 – Henry Montgomery Lawrence, British soldier, statesman (b. 1806) July 15 – Carl Czerny, Austrian composer (b. 1791) July 19 – Stefano Franscini, member of the Swiss Federal Council (b. 1796) July 29 – Charles Lucien Bonaparte, French naturalist, ornithologist (b. 1803) August 3 – Eugène Sue, French novelist (b. 1804) August 29 – Stephen Cassin, United States Navy officer (b. 1783) September 3 – John McLoughlin, Canadian trapper (b. 1784) September 5 – Auguste Comte, French philosopher (b. 1798) November 12 Manuel Oribe, 2nd President of Uruguay (b. 1792) Maximilian Spinola, Italian entomologist (b. 1780) November 26 – Joseph von Eichendorff, German poet (b. 1788) December 3 – Christian Daniel Rauch, German sculptor (b. 1777) December 15 – Sir George Cayley, English aviation pioneer (b. 1773) December 27 – Lucien Baudens, French military surgeon (b. 1804) Date unknown Eduard von Feuchtersleben, Austrian mining engineer and writer (b. 1798) Ludwik Gorzkowski, Polish politician, physicist and revolutionary activist (b. 1811) Elizabeth Philpot, British paleontologist (b. 1780) References