December 18– King Magnus III (Birgersson) dies after a 15-year reign. He is succeeded by his 10-year-old son Birger (Magnusson). Although, Sweden is an elective monarchy, Birger had already been appointed heir to the throne in 1284.
Quia Emptores, a statute passed by Edward I (Longshanks), puts an end to the practice of subinfeudations. The statute allows land to be sold according to royal approval, as long as the new owner answers directly to his lord or the king.
November 28–Eleanor of Castile, wife of Edward I (Longshanks), dies while traveling in the North. She has been suffering from illness for some time, and the cold and dampness of the winter months probably aggravate her condition.
December – Edward I (Longshanks) travels with the body of Eleanor of Castile from Lincoln to London. Remembering his wife, Edward erects a series of crosses at each location that the body rests over night. These are known as the twelve Eleanor crosses.
Winter – The second of the Statutes of Mortmain are passed during the reign of Edward I (Longshanks), which prevents land from passing into the possession of the Church.
Levant
June–Genoa concludes a new commercial treaty with the Mamluks; five galleys sent by King James II (the Just) join the Venetian Crusader fleet (some 20 ships) on its way to Acre. On board of the fleet are Italian urban militias and mercenary forces under Seneschal Jean I de Grailly, who have fought for the Papal States in the so-called Italian Crusades.[4]
August– Italian Crusaders massacre Muslim merchants and peasants, and some local Christians in Acre. Some claim it began at a drunken party – others that a European husband found his wife making love to a Muslim. The barons and local knights try to rescue a few Muslims and take them to the safety of the castle, while some ringleaders are arrested.[5]
August 30– Survivors and relatives of the massacre at Acre take bloodstained clothing to Sultan Qalawun (the Victorious) in Cairo, who demands that the leaders of the riot be handed over for trial. But the nobles refuse to send the ringleaders, Qalawun now got legal clearance from the religious authorities in Cairo to break the truce with Crusader states.[6]
October– Qalawun (the Victorious) orders a general mobilization of the Mamluk forces. In a council, is decided that a peace delegation is sent to Cairo under Guillaume de Beaujeu, Grand Master of the Knights Templar. But Qalawun demands huge compensation for those killed in Acre, and sends a Syrian army to the coast of Palestine, near Caesarea.[7]
November 10– Qalawun (the Victorious) dies as the Egyptian Mamluk army sets out for Acre. He is succeeded by his eldest son Al-Ashraf Khalil as ruler of the Mamluk Sultanate. Khalil orders his allies and tributaries in Syria to prepare for a campaign next spring. Governors and castle commanders are ordered to assemble siege equipment and armor.[8]
Year without winter– An exceptionally rare instance of uninterrupted transition, from autumn to the following spring, in England and the mainland of Western Europe.[11]