Events of 1406

• November 30 – Pope Gregory XII succeeds Pope Innocent VII as the 205th pope.

• December 25 – John II becomes King of Castile.

• Construction of the Forbidden City begins in Beijing during the Chinese Ming Dynasty.

• Richard Whittington becomes Lord Mayor of London.

• Eric of Pomerania marries Philippa, daughter of Henry IV of England.

• James I becomes King of Scotland, after having been captured by Henry IV of England.

• Richard, Earl of Cambridge, marries Anne Mortimer.

• Pisa is subjugated by Florence.

Births

• September 26 – Thomas de Ros, 9th Baron de Ros, English soldier and politician (d. 1430)

• date unknown – Ulrich II of Celje (d. 1456)

• Lorenzo Valla, humanist

Deaths

• January 6 – Roger Walden, English bishop

• March 19 – Ibn Khaldun, Arab historian (b. 1332)

• April 4 – King Robert III of Scotland

• May 4 – Coluccio Salutati, Chancellor of Florence (b. 1331)

• July 15 – Duke William of Austria

• September 16 – Cyprian, Metropolitan of Moscow

• November 6 – Pope Innocent VII

• date unknown

• *King Henry III of Castile (b. 1379)

• *Joanna, Duchess of Brabant (b. 1322)

• *John de Sutton V (b. 1380)

• probable – Tokhtamysh, khan of the Golden Horde