March 3 – Zheng He receives an imperial order from China’s Emperor Cheng Zu to begin the Ming treasure voyages, carrying imperial letters, silk products and other gifts to various rulers of countries around the Indian Ocean.[5]
April 12 – Hedwig Jagiellon, the 13-year-old daughter of and heiress presumptive to Wladyslaw II, King of Poland, is betrothed in a marriage contract to Prince Frederick, the 7-year-old son of Frederick I, Elector of Brandenburg as part of an alliance between Poland and Brandenburg during the Brandenburg–Pomeranian conflict. The marriage is scheduled to take place after November 19, 1427, when Prince Frederick is to be 14 years old, at which time he will live in Poland and become eligible to serve with Hedwig as ruler of Poland and Lithuania. The marriage will never take place, and the contract is annulled in 1424 when a male heir to the Polish throne, Wladyslaw, is born.[11]
June 10 – One year after returning home for his marriage to Catherine of Valois, and in the English defeat in the Battle of Baugé, King Henry V of England sails back to France with new troops to continue fighting in the Hundred Years War.
July 15 – A ceasefire is declared in the Great Frisian War as the representatives warring parties agree to a treaty at the city of Greetsiel in what is now the German region of Ostfriesland. A boundary is set at the Lauwers River in the Netherlands with the territory to the west (Friesland) going to the Frisian rebel group, the Skieringers. The lands to the east Groningen go the Fetkeapers.[15]
August 29 – Sayf al-Din Tatar, becomes the new Mamluk Sultan of Egypt and Syria after leading a coup d’etat overthrowing and imprisoning his brother, Al-Muzaffar Ahmad. [1]
December 1 – The 11th and last Parliament of King Henry V assembles at Westminster and elects Richard Baynard as Speaker of the House of Commons.
December 21 – Hussite Wars: At the Battle of Kutná Hora, the Bohemian Hussites led by Jan Zizka, and using the best weapons available, force the exit of the crusaders of the Holy Roman Empire. Among the new wespons developed by Zizka’s officers are the “war wagon“, a vehicle with reinforced sides and small openings from which guns can be fired.[19]
^ abcMargoliouth, David Samuel (1911). “Egypt/3 History” . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 9 (11th ed.). Cambridge University Press. p. 102. …(January 13th, 1421), and another infant son, Aḥmad, was proclaimed with the title Malik al-Moẓaffar, the proclamation being followed by the usual dissensions between the amirs, ending with the assumption of supreme power by the amir Tatar, who, after defeating his rivals, on the 29th of August 1421 had himself proclaimed sultan with the title Malik al-Ẓāhir
^Strickland, Agnes (1854). Lives of the Kings and Queens of England from the Norman Conquest. Cambridge: Cambridge University Press (published 2010). pp. 106–107. ISBN 9780511736421. {{cite book}}: ISBN / Date incompatibility (help)
^Graetz, Heinrich (1894). History of the Jews. Jewish Publication Society of America.
^al-Ghāzī, ‘Abd Allāh ibn Muḥammad (2009). ‘Abd al-Malik ibn ‘Abd Allāh ibn Duhaysh (ed.). Ifādat al-anām (in Arabic). Vol. 3. Makkah: Maktabat al-Asadī. pp. 283–284.
^Davies, R. R. (1997). The Revolt of Owain Glyn Dŵr. Oxford, England: Oxford University Press. p. 293. ISBN 978-0-19-285336-3.
^Duczmal, Małgorzata (2012). Jogailaičiai (in Lithuanian). translated by Birutė Mikalonienė and Vyturys Jarutis. Vilnius: Mokslo ir enciklopedijų leidybos centras. p. 245. ISBN 978-5-420-01703-6.
^Kateřina Chárvatová, Dějiny cisterckého řádu v Čechách 1142-1420 (“History of the Cistercian Order in Bohemia 1142-1420”)(Prague:Karolinum, 1998), ISBN 80-7184-617-1. p.103
^Sumption, Jonathan (2015). Cursed Kings:The Hundred Years War. Vol. IV. Faber & Faber. p. 736.
^Minorsky, V. (1955). “The Qara-Qoyunlu And The Qutb-Shahs”. Bulletin of the School of Oriental and African Studies. 17 (1): 62. doi:10.1017/s0041977x00106342. ISSN0041-977X.
^Hoensch, Jörg K. (2000). Die Luxemburger: Eine spätmitelalterliche Dynastie gesamteuropäischer Bedeutung 1308-1437 (in German). Verlag W. Kohlhammer. p. 253.
