Events

• Robert de Sorbon founds the Collège de Sorbonne at Paris, giving a formal college (and still-common name) to the already existing University of Paris in France.

• Matthew Paris, English historian, personally interviews King Henry III of England for an entire week while compiling his major work of English history, Chronica Majora.

• King Henry III of England orders the production of a twenty pence English coin of pure gold, the first high-denomination coin minted in England and the first to use gold. Unfortunately for King Henry, the bullion value of the coins is about 20% higher than the nominal face value, leading to poor circulation as coins are melted down by individuals for their gold content.

• The second Genoese War breaks out between Genoa and Venice in Outremer, known as the War of Saint Sabas.

• The city of Kraków is rebuilt by Boleslaus V of Poland after being nearly destroyed in the Tatar invasions in 1241.

• The Japanese Kōgen era ends, and the Shōka era begins.

• The Mongols take Dai Viet (northern Vietnam).

• Aberdeen Grammar School is opened.

Births

• October 14 – King Przemysł II of Poland (d. 1296)

• Beatrice of Burgundy (d. 1310)

• King Sancho IV of Castile and León (d. 1295)

Deaths

• June 4 – Duke Przemysł I of Greater Poland

• August 15 – Saint Hyacinth

• December 24 – John I, Count of Hainaut (b. 1218)