1227
Year 1227
was a common year starting on Friday of the Julian calendar.Events
- January
- * Livonian Crusade: The Livonian Brothers of the Sword and their crusader allies cross the sea ice from mainland Estonia, and defeat the last Estonian strongholds in the Battle of Muhu and the siege of the Valjala Stronghold in the Saaremaa islands. This marks the end of the Estonian campaign in the Livonian Crusade. The Sword Brothers conquer Danish Estonia, and Tallinn is given town rights under Riga law.
- * Henry III of England declares himself of age, and assumes power.
- * Swedish–Novgorodian Wars: Grand Prince Yaroslav II of Vladimir leads an attack from the Novgorod Republic on Balto-Finnic peoples in eastern Fennoscandia, called "Yem", whom he devastates.
- January 11 - The city of Požega is first mentioned, in a charter of Andrew II of Hungary.
- March - England makes a truce with France.
- March 19 - Pope Gregory IX succeeds Pope Honorius III, as the 178th pope.
- July 22 - Battle of Bornhöved, Count Adolf IV of Schauenburg and Holstein defeated King Valdemar II of Denmark
- November 24 - Prince Leszek I the White, High Duke of Poland, is assassinated at an assembly of Piast dukes at Gąsawa.
- Dōgen receives Dharma transmission and inka from his master Rujing in China, settling his "life's quest of the great matter", going on to introduce Sōtō Zen Buddhism into his native Japan.
Births