March 1 – Under the new Yongle Emperor, 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 The law remains in force until repealed 284 years later.
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 (modern Znojmo in the Czech Republic).[12] He is succeeded as Duke by his 6-year old son, Albert.
October–December
October 16 – The 5th Parliament of King Henry IV of England (summoned August 25), nicknamed "The Unlearned Parliament" because Henry refuses to allow lawyers to sit, opens for a four week session in Coventry, closing on November 13.
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 Innocent VII as the 204th pope of the Roman Catholic Church.[13]
^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, ISBN 978-0-321-08443-9, OCLC64592164
^Dourou-Iliopoulou, Maria (2019). Angevins and Aragonese in the Mediterranean. Athens: Herodotus. p. 167. ISBN 978-960-485-325-0.
^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.
^Longmate, Norman (1990). Defending the Island. London: Grafton. ISBN 0-586-20845-3.
^Mortimer, Ian (2007). The Fears of Henry IV. London: Jonathan Cape. ISBN 978-0-224-07300-4.
^Palmer, Alan; Palmer, Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 115–117. ISBN 0-7126-5616-2.
^Terry Breverton, Owain Glyndwr: The Story of the Last Prince of Wales (Amberley Publishing, 2009)
