February 10 – Thomas of Lancaster, the second son of King Henry IV of England, becomes the "Admiral of the North and South", succeeding Admiral Thomas Beaufort.[1]
March 1 – Under the new Emperor Yongle, China continues to build its fleet, ordering the construction of 50 new seagoing ships from the Capital Guards in Nanjing.[3]
March 20 – As the English Parliament adjourns, King Henry IV gives royal assent to acts that have passed, including the Multipliers Act, which declares "It shall be felony to use the craft of multiplication of gold or silver.", prohibiting any alchemists who has actually may have discovered how to perform transmutation of other substances into precious metals. The law remains in force until repealed 284 years later.
August 25 – King Henry IV of England summons a new parliament, to open on October 16.
September 14 – Albert IV, Duke of Austria, dies at the age of 26 from an illness contracted while he was fighting against Bohemia and Moravia for control of the city of Znaim (now Znojmo in the Czech Republic).[11] He is succeeded as Duke by his 6-year old son, Albert.
October 17 – Cosimo de' Migliorati, Cardinal of the Basilica Cross in Jerusalem, is elected unanimously by eight cardinals to succeed the late Pope Boniface IX. Migliorati takes the papal name Pope Innocent VII as the 204th pope of the Roman Catholic Church.[12]
November 13 – England's "Unlearned Parliament" closes its session, the sixth during the reign of King Henry IV.
^Paul de Rapin-Thoyras, The History of England, Volume 5, (J. and P. Knapton, 1747) p.271
^Léon Guérin, Histoire maritime de France contenant (Paris: Dufour et Mulat, 1851) p. 341
^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
^Dourou-Iliopoulou, Maria (2019). Angevins and Aragonese in the Mediterranean. Athens: Herodotus. p. 167. ISBN978-960-485-325-0.
^Mallett, Michael E. (1996). "La conquista della Terraferma". Storia di Venezia dalle origini alla caduta della Serenissima. Vol. IV, Il rinascimento: politica e cultura (History of Venice from its origins to the fall of the Serenissima. Vol. IV, The Renaissance: Politics and Culture) (in Italian). Rome: Istituto della Enciclopedia Italiana. pp. 181–240. OCLC644711024.
^Poupardin, René (2011). "John, Duke of Burgundy". Encyclopædia Britannica. Vol. 15. Cambridge University Press. pp. 445–446.