1222

Events 
 Foundation of the University of Padua
 Completion of the Cistercian convent 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
 April 17 – Stephen Langton, Archbishop of Canterbury, opens a council at Osney

 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 – Johan Sverkersson, king of Sweden since 1216 (b. 1201)
 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