Birthdays
Abraham Bruner
Turns 33 on this date
Thompson Prettyman Ege
Turns 29 on this date
William Joseph Hardee
Turns 49 on this date
Archibald McAllister
Turns 51 on this date
Agib Ricketts
Turns 30 on this date
Lyman Trumbull
Turns 51 on this date
Events
| Personal | In Maryland, Chief Justice Roger Brooke Taney dies in office | 10/12/1864 |
| US/the World | In Quebec City, delegates from Canadian provinces are meeting to agree resolutions for a united Canada |
10/10/1864 to 10/26/1864 |
| US/the World | In South America, units of Brazil's army invade the Uruguayan province of Cerro Largo | 10/12/1864 |