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 Mar 1864 Famous Deaths by Year May 1864 Famous People by Cause of Death Assassination Drug Overdose Gunshot Wound Murder Plane Crash Suicide