1227

Events

* January 11 - The city of Požega is first mentioned in a charter of Andrew II of Hungary.
* March 19 - Pope Gregory IX succeeds Pope Honorius III as the 178th pope.
* November 23 - Polish Prince Leszek I the White is assassinated at an assembly of Piast dukes at Gąsawa.
* Henry III of England declares himself of age and assumes power.
* According to Russian chronicles, Novgorod attacks Finland with devastating results.
* The Estonian ancient fight for independence ends with foreign rule in the country for next 7 centuries.
* Dogen introduces Zen Buddhism into Japan.

Births

* September 30 - Pope Nicholas IV (d. 1292)
* Charles I of Sicily

Deaths

* March 18 - Pope Honorius III (b. 1148)
* July 23 - Qiu Chuji, Chinese founder of Dragon Gate Taoism (b. 1148)
* August 1 - Shimazu Tadahisa, Japanese warlord (b. 1179)
* August 18 - Genghis Khan, founder of the Mongol Empire (b. c. 1162)
* Reginald de Braose, English rebel baron
* Jochi, son of Genghis Khan
* Marco Sanudo, Venetian crusader