January–December
May 29 – John I succeeds his father, Henry II, as King of Castile and King of León.
September 9 – Treaty of Neuberg signed, splitting the Austrian Habsburg lands between brothers Albert III and Leopold III. Albert III retains the title of Duke of Austria.
The Venetians and Ottomans invade Constantinople and restore John V Palaiologos as Byzantine co-emperor. Andronikos IV Palaiologos is allowed to remain as Byzantine co-emperor but is confined to the city of Silivri for the remainder of his life.
Bairam Khawaja establishes the independent principality of the Turkomans of the Black Sheep Empire in present day Armenia.
Dmitri Donskoi of Moscow raids Estonia.
Foundation of New College, Oxford.
Foundation of Wisbech Grammar School in England.