Events

• Anthony of Padua, patron saint of lost items, is canonized.

• Pope Gregory IX, driven from Rome by a revolt, takes refuge at Anagni.

• The first edition of Tripitaka Koreana is destroyed by Mongol invaders.

• 15 June – Battle of Agridi: Henry I of Cyprus defeats the armies of Frederick II.

• Nasrid dynasty starts.

Births

• Arnolfo di Cambio, Florentine architect (d. 1310)

• Manfred of Sicily (approximate date; d. 1266)

• Bernard Saisset, Occitan bishop of Pamiers (d. 1311)

Deaths

• July 18 – John de Braose, Marcher Lord of Bramber and Gower

• Michael Scot, Scottish mathematician and astrologer (b. 1175)

• Tolui, son of Genghis Khan (b. c. 1190)

• William III of Sicily (executed) (b. 1208)

Monarchs

• Aragon – James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)

• Castile – Ferdinand III, the Saint King of Castile and Leon (reigned from 1217 to 1252)

• Navarre – Sancho VII the Strong King of Navarre (reigned from 1194 to 1234)

• Portugal – Afonso II, the Fat, King of Portugal (reigned from 1212 to 1233)

• Poland – Konrad of Mazovia is succeeded by Henry I the Bearded

• Japan – Emperor Go-Horikawa succeeded by Emperor Shijō

• Mongol Empire – Ögedei Khan, Mongol khaghan (reigned from 1229 to 1241)