1242
| Years: 1239 1240 1241 – 1242 – 1243 1244 1245 | |
| Decades: 1210s 1220s 1230s – 1240s – 1250s 1260s 1270s | |
| Centuries: 12th century – 13th century – 14th century | |
Events
- April 5 – During a battle on the ice of Chudskoye Lake, Russian forces rebuff an invasion attempt by the Teutonic Knights.
- Emperor Go-Saga ascends to the throne of Japan.
- Batu Khan establishes the Golden Horde at Sarai.
- Cleves, Germany is chartered as a city.
- Kiel, Germany is chartered as a town.
- The diocese of Warmia, Poland is created.
- The archbishop of Wiesbaden conquers the city from the Duke of Nassau.
- The Mongols invade the Seljuk sultanate.
- German colonists arrive in Bratislava after the Mongols fail to conquer the city.
- The Mongols of the Golden Horde devastate Bulgaria, and force the nation to pay tribute.
- Timeline of medicine and medical technology – Ibn Nafis suggests that the right and left ventricles of the heart are separate and describes the lesser circulation of blood.
Births
- December 15 – Prince Munetaka, 6th Kamakura shogun in Japan (d. 1274)
- George Pachymeres, Byzantine historian
Deaths
Monarchs/Presidents
- Aragon – James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)
- Castile – Ferdinand III, the Saint King of Castile and Leon (reigned from 1217 to 1252)
Categories: 1242