1387

Year 1387 (MCCCLXXXVII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.

January–December

 * Elizabeta Kotromanic, mother of Mary, Queen of Hungary and the regent of Hungary, is murdered in prison by the Croatian rebels (her daughter is liberated on 4 June).


 * January 1 – Charles III ascends to the throne of Navarre, after the death of his father, Charles II.
 * January 5 – John I succeeds his father, Peter IV, as King of Aragon and Valencia, and forms an alliance with France and Castile.
 * March 11 – Battle of Castagnaro: Padua, led by John Hawkwood, is victorious over Giovanni Ordelaffi of Verona.
 * March 24–25 – Battle of Margate off the coast of Margate: The Kingdom of England is victorious over a Franco-Castilian-Flemish fleet.
 * June 2 – John Holland, a maternal half-brother of Richard II of England, is created Earl of Huntingdon.
 * August 22 – Olaf, King of Norway and Denmark and claimant to the throne of Sweden, dies. The vacant thrones come under the regency of his mother Margaret I of Denmark, who will soon become queen in her own right.
 * September 27 – Petru of Moldavia pays homage to Władysław II Jagiełło, making Moldavia a Polish fief (which it will remain until 1497).
 * December 19 – Battle of Radcot Bridge: Forces loyal to Richard II of England are defeated by a group of rebellious barons known as the Lords Appellant. Richard II is imprisoned, until he agrees to replace all the councillors in his court.

Date unknown

 * Timur conquers the Muzaffarid Empire in central Persia, and appoints three puppet rulers.
 * Khan Tokhtamysh of the Golden Horde invades the Timurid Empire, but has to withdraw soon after, due to heavy snow.
 * Maghan II succeeds his brother, Musa II, as Mansa of the Mali Empire

Births

 * July 6 – Queen Blanche I of Navarre (d. 1441)
 * date unknown – Henriette, Countess of Montbéliard, regent of Württemberg (d. 1444)

Deaths

 * January – Elizabeth of Bosnia, regent of Hungary
 * January 1 – King Charles II of Navarre (b. 1332)
 * January 6 – Peter IV of Aragon (b. 1319)
 * July 20 – Robert IV of Artois, Count of Eu (poisoned) (b. 1356)
 * July 22 – Frans Ackerman, Flemish statesman (b. 1330)
 * August 23 – King Olaf IV of Norway/Olaf II of Denmark (b. 1370)
 * date unknown
 * Richard Óg Burke, second Clanricarde of Ireland
 * Sir David Hanmer, Welsh judge, father-in-law of Owain Glyndŵr