January 5– In modern-day Myanmar, peace negotiations begin between King Razadarit of Hanthawaddy at his capital Pegu, with the emissaries of Minkhaung I, ruler of the Kingdom of Ava, 10 days after the Ava forces defeated Razadarit's army at the Battle of Nawin.
April 1–Prince Henry of England, son of King Henry IV, is appointed by his father to serve for one year as the Royal Lieutenant of Wales, with command over English toops to fight the Welsh rebels.
April 3–Jean II Le Maingre of France, also known as Boucicaut, the French Governor of Genoa, leads a fleet of 18 ships, 600 horses and 700 infantry to stop an attack by Muslims on the island of Cyprus and the city of Famagusta. Boucicaut besieges the Muslim city of Candelore on June 24.
June 14– The Emperor Manuel II restores Matthew I as the Ecumenical Patriarch of Constantinople, leader of the Eastern Orthodox Christians. Matthew had been deposed the previous autumn during the Emperor's absence from Byzantium.
June 15–John III of Soltaniyeh, a Dominican friar of the Roman Catholic Church, arrives in Paris as an emissary of the conqueror Timur, Emir of Transoxiana, in order to secure an agreement with King Charles VI of France in order to open trade relations between the two nations.
August 5– The coronation of Ladislaus of Naples as King of Hungary and Croatia takes place in Zara (now Zadar in Croatia), where Ladislaus had arrived on July 19. His reign lasts less than four months before he is deposed.
October 18– An English fleet organised by John Hawley of Dartmouth and Thomas Norton of Bristol seizes seven French merchant vessels in the English Channel.
December 22–Pope Boniface IX annuls and revokes numerous indulgences previously paid to the Roman Catholic Church in return for a reduction of time in purgatory.
In China, the Emperor Cheng Zu moves the capital from Nanjing to Beijing, commissions the Yongle Encyclopedia, one of the world's earliest and largest known general encyclopedias, and orders his coastal provinces to build a vast fleet of ships, with construction centered at Longjiang near Nanjing; the inland provinces are to provide wood and float it down the Yangtze River.
Tadhg Ruadh mac Maelsechlainn O Cellaigh succeeds Conchobar an Abaidh mac Maelsechlainn O Cellaigh, as King of Hy-Many, in modern-day counties Galway and Roscommon.
Maolmhordha mac Con Connacht succeeds Giolla Iosa mac Pilib, as King of East Breifne, in modernt-day counties Leitrim and Cavan.
probable– Ououso becomes King of Nanzan, in modern-day south Okinawa, Japan.
↑Miskolczy, István (1922). Nápolyi László, 1. közlemény Századok 56, Budapest. pp. 330-350.
↑Dreyer, Edward L. (2007), Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433, New York: Pearson Longman, p.105, ISBN978-0-321-08443-9, OCLC64592164
↑Rogers, Clifford J., ed. (2010). "Modon, Battle of". The Oxford Encyclopedia of Medieval Warfare and Military Technology. Oxford University Press. pp.13–14. ISBN978-0-195334036.
↑C. L. Kingsford, Prejudice and Promise in Fifteenth Century England (Taylor & Francis, 2013) p.84
↑Sumption, Jonathan (2015). The Hundred Years War. Vol.4: Cursed Kings. Faber & Faber. p.120.
↑"Pardons and Pilgrims", by Diana Webb, in Promissory Notes on the Treasury of Merits: Indulgences in Late Medieval Europe, ed. by Robert Swanson (BRILL, 2018) p.263