1237Centuries: 12th century - 13th century - 14th century
- Thomas II of Savoy becomes count of Flanders.
- Elblag, Poland is founded.
- The Golden Horde invades Russia.
- Gualdo Tadino, Italy, is destroyed by fire.
- The County of Artois is founded in France.
- Baldwin II becomes Latin Emperor of Constantinople.
- Conrad IV of Germany becomes Holy Roman Emperor.
- The Livonian Brothers of the Sword unite with the Teutonic Knights.