- Oct 11 Ferdinand Eisenstein, German mathematician (number theory), dies at 29
- Oct 15 Friedrich Ludwig Jahn, German educator and founder of the turnverein (gymnastics) movement, dies at 74
- Oct 22 Hans C E Freiherr von Gagern, German advisor to Dutch king, dies at 86
Daniel Webster
Oct 24 Daniel Webster, US Secretary of State (1841-43, 1850-52), politician and lawyer,, dies at 70
Daniel Webster
- Oct 28 Gerhard Moritz Roentgen, Dutch industrialist (founder of Fijenoord dockyard), dies at 57