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The 1420s

409 sourced entries across 10 years, inside the 15th century. Each year below opens its own page; the lines under it are that year’s highest-ranked entries.

1420 CE46 entries

  • March 25 – Hussite Wars After their offer of a surrender is refused, the outnumbered Hussites of Bohemia, led by Jan Zizka, defeat the invading Holy Roman Imperial forces at the Battle of Sudoměř fought near modern-day Čejetice in the Czech Republic.
  • June 7 – Troops of the Republic of Venice capture Udine after a long siege, ending the independence of the Patriarchal State of Friuli, run by the Patriarch of Aquileia.
  • June 12–July 14 – The Hussites of Jan Zizka defeat the combined forces of the Holy Roman Empire, the Kingdom of Germany, the Duchy of Austria and the Kingdom of Hungary at the Battle of Vítkov Hill on the outskirts of Prague.

1421 CE43 entries

  • April 8 – Maredudd ab Owain Glyndŵr, son of the Welsh rebel Owain Glyndŵr, accepts a pardon from, and swears loyalty to England's King Henry V, formally bringing an end to the Glyndŵr rebellion.
  • July 2 – At Erciş in what is now Turkey, Iskandar ibn Yusuf is crowned as the Sultan of Qara Qoyunlu, a kingdom encompassing what are now eastern Turkey, northwestern Iran and northern Iraq, northern Armenia and all of Azerbaijan.
  • September 12– In what is now South Korea, Taejong of Goryeo, King of Joseon from 1400 to 1418, then King Emeritus since 1418, is crowned as the first Grand King Emeritus of Joseon.

1422 CE36 entries

  • March 11 – On Okinawa Island, now part of Japan, King Shō Hashi of Chūzan begins a war against the two other kingdoms on the island, Hokuzan and Nanzan and begins the unification of Okinawa.
  • September 1 – Henry VI becomes King of England, at the age of nine months, upon the death of his father, King Henry V.
  • September 27 – The Teutonic Knights sign the Treaty of Melno with the Kingdom of Poland and Grand Duchy of Lithuania, after the brief Gollub War. The Prussian–Lithuanian border established by the treaty remains unchanged, until World War I.

1423 CE42 entries

  • February 11 – Hundred Years War: The island of Tombelaine, off of the coast of France, is taken by English forces in order to be used as a base to attack Mont Saint-Michel.
  • May 22 – Byzantine–Ottoman Wars: After a two-day battle, Turakhan Beg, Ottoman governor of Thessaly, breaks through the Hexamilion wall, and ravages the Peloponnese Peninsula in Greece.
  • July 31 – Hundred Years' War – Battle of Cravant: The French army is defeated at Cravant, on the banks of the River Yonne near Auxerre, by the English and their Burgundian allies.

1424 CE40 entries

  • February 1 – While negotiating his release from captivity, King James of Scotland is allowed to be married to Joan Beaufort in London, with a ceremony taking place at Southwark Cathedral.
  • June 22 – Mamluk Sultanate of Egypt under the leadership of Egyptian general Ibn bint al-Aqsarayi launch a series of military expeditions marking the start of the Mamluk campaigns against Cyprus (1424–1426).
  • November – The Bourges astronomical clock, designed by Jean Fusoris, is installed in Bourges Cathedral as a gift to the town from Charles VII of France.

1425 CE42 entries

  • June 27 – Zhu Zhanji is formally enthroned as the Ming dynasty Emperor of China as the Emperor Xuanzong, beginning the Xuande Era.
  • July 14 – The English Parliament closes as King Henry VI gives royal assent to the Labourers Act 1425, the River Lee Navigation Act 1425 and laws requiring a royal license for exportation of sheep and for exportation of butter and cheese.
  • November 9 – Kale Kye-Taung Nyo becomes King of Ava by having his lover, Queen Shin Bo-Me, assassinate his 8-year-old nephew, King Min Hla.

1426 CE32 entries

  • April 22 – The Second Scutari War between the Republic of Venice and the Serbian Despotate is formally ended by the signing of a treaty at the then Serbian city of Vushtrri in what is now Albania.
  • May 16 – In Burma, Kale Kye-Taung Nyo, ruler of the Kingdom of Ava, flees his capital. He is succeeded by Mohnyin Thado, who receives Thinkhaya III of Toungoo.
  • July 7 – Battle of Khirokitia: King Janus of Cyprus is defeated by Egyptian troops under Ibn bint al-Aqsarayi and captured by the Mamluks and brought to Egypt, where he is ransomed after ten months.

1427 CE48 entries

  • June 7 – Pope Martin V orders the Roman Catholic bishops of Portro and Alba to work on driving the Fraticelli faction of the Franciscan Order from Italy.
  • August 4 – Hussite Wars: Battle of Tachov – The Hussites decisively beat the crusader armies, ending the Fourth Anti-Hussite Crusade.
  • October 13 – Lincoln College, a constituent college of the University of Oxford in England, is founded by the Bishop of Lincoln.

1428 CE49 entries

  • June 3 – Dan II leads an army against the Ottomans at Golubac Fortress, obtaining a treaty that will allow him a semi-peaceful rule in Wallachia, until 1432.
  • October 12 – English forces under Thomas Montacute, 4th Earl of Salisbury, besiege Orléans. Jean de Dunois, the Bastard of Orléans, commands the defenders. Bombardment starts on October 17 and troops attempt an assault on
  • November 11 – The Battle of Kratzau takes place in Bohemia in what is now the city of Chrastava in the Czech Republic, as the Silesian troops of the Bohemian Crown Lands under of the Holy Roman Empire

1429 CE31 entries

  • April 29 – Siege of Orléans: Joan of Arc enters Orléans with a relief expedition.
  • June 18 – Battle of Patay: French forces under Joan of Arc smash the English forces under Lord Talbot and Sir John Fastolf, forcing the withdrawal of the English from the Loire Valley.
  • October 12 – The Kamenz massacre of 1,200 Catholics by the Protestant Hussites takes place in the village of Kamenz in the Electorate of Saxony.