Events

• March 7 – The Catholicon, a religious Latin dictionary, is completed by John Balbi of Genoa.

• March 19 – King Alexander III of Scotland dies in a horse accident with only Queen Yolande de Dreux's unborn child and 3-year-old Margaret, Maid of Norway as heirs; this sets the stage for the First War of Scottish Independence and increased influence of England over Scotland.

• In the Lao kingdom of Muang Sua, King Panya Leng is overthrown in a coup d'etat led by his son Panya Khamphong, which is likely to have been supported by the regionally dominant Mongol Yuan dynasty of China.

• King Philip IV of France imposes the gabelle — a tax on salt in the form of a state monopoly — which would become immensely unpopular and grossly unequal, but persist until 1790.

• Prussians resettled in Sambia stage a famous uprising.

• Kublai Khan plots a final Mongol invasion of Japan, but aborts the plan due to a lack of necessary resources.

• Third Mongol Golden Horde against Poland, led by Tole Boqa.

• King Rudolph I of Germany declares all Jews to be "serfs of the Treasury", thus negating all their political freedoms.

Births

• March 8 – John III, Duke of Brittany (d. 1341)

• June 30 – John de Warenne, 8th Earl of Surrey, English politician (d. 1347)

• Sir James Douglas, Scottish patriot (d. 1330)

• Hugh the younger Despenser (d. 1326)

• Frederick I of Austria (d. 1330)

• William III, Count of Holland (d. 1337)

• John Clyn, Irish chronicler, believed to have been born about this year.

Deaths

• March 19 – Alexander III of Scotland (b. 1241)

• July 30 – Bar-Hebraeus, Syrian scholar (b. 1226)

• October 8 – John I, Duke of Brittany (b. 1217)

• November 9 – Roger Northwode, English statesman (b. 1230)

• Abul-Faraj, Armenian historian (b. 1226)

• Hugh de Balsham, Bishop of Ely

• Eric V of Denmark (b. 1249)

• William of Moerbeke, English Dominican classicist (b. 1215)

Fiction

• In the Video game MediEvil, the Battle of Gallowmere, Scotland, sir Daniel Fortesque leads Scottish rebels towards the evil Fictional character wizard Zarok and his army. Fortesque dies, but Zarok is defeated and vanquished, but to return 100 years later.