Year was a Leap Year Starting On Saturday (link will display the full calendar) of the Julian Calendar .
- May 19 - Martin I succeeds his brother, John I , as King of Aragon (now north-east Spain ).
- defeat a joint Crusade by Hungary , France , the Holy Roman Empire , England and Wallacia , led by King Sigismund of Hungary. This was last large-scale crusade of the Middle Ages .
- November 24 - Transit of Venus - the last not to be part of a pair. Possibly observed by Aztec astronomers.
- November 29 - Ralph De Neville, 1st Earl Of Westmorland , marries Joan Beaufort
- Temporary peace is declared between England and France with the marriage of Richard II Of England and Isabella Of Valois , the daughter of Charles VI Of France .
- France conquers the Republic Of Genoa .
- After a fourteen year period of Interregnum , Peter Of Saint Superan is declared as ruler of the Principality Of Achaea (now southern Greece ).
- In the "Battle of the Thirty", a mass trial by combat, the Clan Cameron defeat the Clan MacKintosh on the North Inch of Perth , Scotland .
- Queen Margaret of Norway , Denmark and Sweden makes her adopted son Eric Of Pomerania joint ruler of Sweden . Eric had already been made joint ruler of Norway .
- Abu Amir succeeds Abdul Aziz II as ruler of the Marinid Dynasty in present-day Morocco .
- Timur appoints his son Miran Shah as Timurid viceroy of Azerbaijan .
- The Kartid Dynasty is brought to an end in east Persia after its remaining rulers are murdered at a banquet by Miran Shah , son of Timur Lenk.
- Philibert de Naillac succeeds Juan Fernández De Heredia as Grand Master Of The Knights Hospitaller .
- The Ulu Camii mosque is built in Bursa by the Ottomans .
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