- Oct 5 Antoni Melchior Fijałkowski, Polish bishop (b. 1778)
- Oct 6 Elias Canneman, liberal minister of Finance (1813-14), dies at 84
- Oct 21 Edward Dickinson Baker, British-American attorney, politician (US Senator from Oregon, 1860-61; US Representative from Illinois, 1845-47, 1849-51), and Union Army officer, dies in the US Civil War Battle of Balls Bluff, Virginia at 50
- Oct 21 John Breckinridge Grayson, Confederate brigadier general, dies
- Oct 25 Friedrich Carl von Savigny, German jurist and legal scholar (historical school of jurisprudence), dies at 82
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide