Events

• April 17 – Stephen Langton, Archbishop of Canterbury, opens a council at Osney.

• The Cistercian convent is completed in Alcobaca, Portugal.

• Eric XI becomes King of Sweden.

• Premysl Ottokar I reunites Bohemia and Moravia.

• John III Ducas Vatatzes becomes Byzantine Emperor (in the Empire of Nicaea).

• Alexander of Hales enters the Franciscan Order.

• The Manden Charter is proclaimed in Mali.

• The Golden Bull of 1222 is issued in Hungary.

Births

• February 16 – Nichiren, Japanese founder of Nichiren Buddhism (d. 1282)

• August 4 – Richard de Clare, 6th Earl of Hertford, English soldier (d. 1262)

• Andrei II of Russia, Grand Prince of Vladimir (d. 1264)

Deaths

• March 10 – King John I of Sweden

• June 23 – Constance of Aragon (b. 1179)

• August 2 – Count Raymond VI of Toulouse (b. 1156)

• August 12 – Ladislaus Jindrich of Bohemia

• Theodore I Lascaris, founder of the Byzantine Empire of Nicaea