1223

Events

* March 25 - Sancho II is crowned King of Portugal
* May 31 - Battle of the Kalka River: The Mongol armies of Genghis Khan decisively defeat the East Slavic warriors.
* August 6 - Louis VIII is crowned King of France.
* The Franciscan Rule is approved by Pope Honorius III.
* For a short time all Germans are forced out of Estonia.

Births

* John FitzAlan, 6th Earl of Arundel (d. 1267)
* Baibars, Mamluk Sultan of Egypt and Syria (d. 1277)
* Hugh le Despencer, 1st Baron le Despencer (d. 1265)

Deaths

* March 8 - Wincenty Kadłubek, Polish bishop and historian (b. 1161)
* March 25 - King Afonso II of Portugal (b. 1185)
* July 14 - King Philip II of France (b. 1165)
* Giorgi IV Lasha, King of Georgia (b. 1192)
* Giraldus Cambrensis Cambro-Norman clergyman and chronicler (b. 1146)
* Mstislav III of Kiev
* Mukhali, Mongol general
* Unkei, Japanese sculptor (b. 1151)