Births on September 12

Edward Shepherd Creasy, English historian and jurist (d. 1878)

Sir Edward Shepherd Creasy (12 September 1812 – 17 January 1878) was an English historian and jurist.

27 Feb

Manuel Belgrano
Argentine War of Independence: Manuel Belgrano raises the Flag of Argentina in the city of Rosario for the first time.
26 Mar

Gerrymander
A political cartoon in the Boston Gazette coins the term "gerrymander" to describe oddly shaped electoral districts designed to help incumbents win reelection.
24 Jun

French invasion of Russia
Napoleonic Wars: Napoleon's Grande Armée crosses the Neman river beginning the invasion of Russia.
12 Jul

Upper Canada
The American Army of the Northwest briefly occupies the Upper Canadian settlement at what is now at Windsor, Ontario.
7 Sep

Battle of Borodino
French invasion of Russia: The Battle of Borodino, the bloodiest battle of the Napoleonic Wars, was fought near Moscow and resulted in a French victory.