- Oct 2 Louis Hersent, painter, dies
- Oct 6 Stephen Elvey, English composer, dies at 55
- Oct 12 Harry Smith, English military commander and leader of British-Indian forces (Battle of Aliwal), dies at 73
- Oct 24 Elie Decazes, French Bourbon Restoration politician, dies at 80
- Oct 31 Johan Nathan, murderer, hanged
- Oct 31 Thomas Cochrane, 10th Earl of Dundonald, British admiral (b. 1775)