Events

• Emperor Go-Fukakusa succeeds Emperor Go-Saga on the throne of Japan.

• Güyük Khan is enthroned as the 3rd Great Khan of the Mongol Empire (an event also witnessed by a papal mission under Giovanni da Pian del Carpine) at Karakorum.

• The Mexicans settle Chapultepec, a former Toltec stronghold.

• The Gothic chapel of Sainte-Chapelle is built.

• With the death of Duke Frederick II, the Babenberg dynasty ends in Austria.

• Beaulieu Abbey is dedicated.

Births

• September 14 – John FitzAlan, 7th Earl of Arundel (d. 1272)

Deaths

• February 25 – Dafydd ap Llywelyn, prince of Wales

• May 31 – Isabella of Angouleme, queen of John of England

• June 15 – Duke Frederick II of Austria (b. 1219)

• September 20 – Mikhail of Chernigov, Prince of Kiev

• September 30 – Yaroslav II of Russia (b. 1190)

• November 8 – Berenguela of Castile, queen of Castile and León (b. 1196)

• Walter IV of Brienne (b. 1205), Count of Brienne

• Alice of Champagne, daughter of Henry II of Champagne and regent of Jerusalem (b. 1196)

• Richard Fitz Roy, illegitimate son of John of England

• Ednyfed Fychan, sensechal of Gwynedd