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|1397 by topic|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1397 in poetry|
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- January – Mircea I takes back the throne of Wallachia.
- February 10 – John Beaufort becomes Earl of Somerset.
- June 6 – Richard Whittington is nominated as Lord Mayor of London for the first time.
- July 20 – Queen Margaret forms the Kalmar Union, uniting the three kingdoms of Denmark, Norway (with Iceland, Greenland, the Faroe Islands, Shetland Islands, Orkney Islands and Sweden (including Finland, with the Åland Islands).
- September 29
- November 8 – Thomas Arundel, accused of high treason by King Richard II of England, is replaced by Roger Walden as Archbishop of Canterbury.
- The Ottomans capture the Vidin Empire, the only remaining independent Bulgarian state. Emperor Ivan Sratsimir of Vidin is taken prisoner and later disappears.
- Richard II of England attempts to reassert authority over his kingdom, by arresting members of a group of powerful barons known as the Lords Appellant.
- Temur Qutlugh is crowned as the Khan of Golden Horde with the help of general Edigu, although Edigu continues to hold the real power.
- The Kirillo-Belozersky Monastery is founded in north-west Russia.
- The Sretensky Monastery is founded in Moscow.
- The Università, a form of local government, is established in Malta.
- The first hospital is created at al-Andalus, in Granada.
- Neuhausergasse 4, the brewer of Spaten, is listed on the register of Munich breweries.
- Gregory of Tatev writes the Book of Questions, a ten-volume encyclopedic work, at the Tatev Monastery, in Armenia.
- February 21 – Infanta Isabel, Duchess of Burgundy (d. 1471)
- May 15 – Sejong the Great of Joseon, ruler of Korea (d. 1450)
- August 10 – Albert II of Germany, Holy Roman Emperor (d. 1439)
- November 15 – Pope Nicholas V (d. 1455)
- date unknown
- January 11 – Skirgaila, Grand Duke of Lithuania
- February 18 – Enguerrand VII, Lord of Coucy (b. 1340)
- March 14 – Henry VIII the Sparrow, Duke of Żagań–Głogów (b.c. 1357)
- April 25 – Thomas Holland, 2nd Earl of Kent (b. 1350)
- June 3 – William Montacute, 2nd Earl of Salisbury, English military leader (b. 1328)
- June 16 – Philip of Artois, Count of Eu, French soldier (b. 1358)
- July 15 – Catherine of Henneberg, German ruler (b. c. 1334)
- September 2 – Francesco Landini, Italian composer
- September 8 – Thomas of Woodstock, 1st Duke of Gloucester, son of King Edward III of England (b. 1355)
- September 15 – Adam Easton, English cardinal
- September 21 – Richard FitzAlan, 11th Earl of Arundel, English military leader (executed) (b. 1346)
- "Islamic Culture and the Medical Arts _ Hospitals". Retrieved 8 November 2011.