Events

Europe

• February 16 – Andrew of Longjumeau is dispatched by King Louis IX of France as an ambassador to meet with the Khan of the Mongols.

• May 26 – The Battle of Fossalta is fought.

• 13 June – coronation of Alexander III as King of Scots.

• August 15 – The First Battle of Athenry is fought in Galway, Ireland.

• University College, the first College at Oxford, is founded with money gifted from the estate of William of Durham.

• The Moors lose possession of Alicante in Al-Andalus (Islamic Spain).

• King Afonso III of Portugal recaptures Faro in the Algarve from the Moors, thus ending the Portuguese Reconquista.

• Roger Bacon publishes a major scientific work, including writings of convex lens spectacles for treating long-sightedness and the first publication of the formula for gunpowder in the western world.

• The city of Mystras, Greece is fortified and a palace is constructed there by William II Villehardouin.

• The city of Stralsund (in present-day Germany) is burned to the ground by forces from the rival city of Lübeck.

• Swedish statesman Birger Jarl subjugates the province of Tavastia in Finland, securing Swedish power in Finland.

• Alphonse of Toulouse orders the expulsion of Jews from Poitou, France.

• Jean Mouflet makes an agreement with the abbot of Saint-Pierre-le-Vif in the Senonais region in France: in return for an annual payment, the monastery will recognize Jean as a "citizen of Sens". He is a leather merchant, has a leather shop that he leases for the rent of 50 shillings a year. The agreement is witnessed by Jean's wife, Douce, daughter of a wealthy and prominent citizen of Sens, Felis Charpentier.

• The Hungarian capital is moved from Esztergom to Buda.

Asia

• Pho Khun Si Indrathit becomes the first king of the Sukhothai kingdom, marking the founding of the modern Thai nation.

• The Hikitsuke, a judicial organ of the Kamakura and Muromachi shogunates of Japan, is established.

• The Japanese Hōji era ends, and the Kenchō era begins.

Africa

• King Louis IX of France captures Damietta in Egypt, the first major military engagement of the Seventh Crusade.

Births

• July 9 – Emperor Kameyama of Japan (died 1305)

• Eric V of Denmark (died 1286)

• Robert III of Flanders

• Frederick I, Margrave of Baden (died 1268)

• Humphrey de Bohun, 3rd Earl of Hereford (died 1297)

• Pope John XXII (died 1334)

• Menachem Meiri, rabbi

Deaths

• July 6 – King Alexander II of Scotland (born 1198)

• July 19 – Jacopo Tiepolo, Doge of Venice

• September 27 – Count Raymond VII of Toulouse (born 1197)

• As-Salih Ayyub, ruler of Egypt

• Abu Zakariya, ruler of the Maghreb (born 1203)

• William of Sherwood, English logician (born 1190)

• Wuzhun Shifan, Chinese Zen Buddhist monk (born 1178)

• Song Ci, Chinese physician and judge (born 1186)