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|Establishments – Disestablishments|
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- January – Timur the Lame captures and sacks Haridwar.
- February 3
- John of Gaunt, uncle of King Richard II of England and father of Henry Bolingbroke, dies.
- Richard II cancels the legal documents allowing the exiled Henry Bolingbroke to inherit his father's land.
- While Richard II is away on a military campaign in Ireland, Henry Bolingbroke, with exiled former Archbishop of Canterbury Thomas Arundel as an advisor, returns to England and begins a military campaign to reclaim his confiscated land. After regaining his power, Henry Bolingbroke is urged to take the crown from the unpopular Richard II. Richard is taken prisoner upon his return from Ireland and eventually forced to abdicate. Parliament then charges Richard with committing crimes against his subjects.
- August 6 – Prince of Yan (Zhu Di) of China starts a rebellion in Beijing.
- August 12 – Battle of the Vorskla River: Mongol Golden Horde forces, led by Khan Temür Qutlugh and Emir Edigu, annihilate a crusading army led by former Golden Horde Khan Tokhtamysh, and Grand Duke Vytautas of Lithuania.
- September 30 – Parliament accepts Henry Bolingbroke as the new king of England.
- October 13 – Henry IV of England is crowned.
- October 19 – Thomas Arundel is restored as Archbishop of Canterbury, replacing Roger Walden.
- November 1 – John VI, Duke of Brittany begins his reign.
- Faraj succeeds his father, Barquq, as Mamluk Sultan of Egypt.
- Sultan Bayezid I of the Ottoman Empire invades Mamluk-occupied Syria. A rift forms between Sultan Bayezid and Timur of the Timurid Empire, who also wanted to conquer Syria.
- Ladislaus regains the throne of Naples, after overthrowing King Louis II.
- King Jogaila becomes sole ruler of Poland, after the death of his co-ruling wife, Queen Jadwiga.
- Abu Said Uthman III succeeds Abdullah, as ruler of the Marinid Dynasty in present-day Morocco.
- The Principality of Achaea (now southern Greece) resists an invasion by the Ottoman Empire.
- Traditional foundation date of the Kingdom of Mysore in India, which survives until 1950.
- Iuga becomes prince of Moldavia
- March 16 – Xuande Emperor of China (d. 1435)
- June 26 – John, Count of Angoulême (d. 1467)
- date unknown
- January 4 – Nicholas Eymerich, Catalan theologian and inquisitor
- February 3 – John of Gaunt, 1st Duke of Lancaster (b. 1340)
- March 24 – Margaret, Duchess of Norfolk (b. c. 1320)
- July 13 – Peter Parler, German architect (b. 1330)
- July 17 – Queen Jadwiga of Poland (b. 1374)
- August 12 – Demetrius I Starshy, Prince of Trubczewsk (in battle) (b. 1327)
- August 15 – Ide Pedersdatter Falk, Danish noblewoman (b. 1358)
- August 26 – Mikhail II, Grand Prince of Tver (b. 1333)
- September 22 – Thomas de Mowbray, 1st Duke of Norfolk, English politician (b. 1366)
- October 3 – Eleanor de Bohun, English noble (b. 1360)
- October 5 – Raymond of Capua, Italian Dominic friar and venerated Christian (b. 1330)
- November 1 – John IV, Duke of Brittany (b. 1339)
- date unknown