October 1– The Christian crusaders of France and Genoa lift the siege of Mahdiya after Genoa negotiates a ceasefire and a 10-year armistice. The crusaders return to Genoa after having sustained 274 deaths from combat and from disease.
A treaty is signed between the Kingdom of Scotland and the Kingdom of France at Edinburgh and witnessed by Walter Forrester.
December 3– King Richard II of England gives royal assent to numerous laws passed as the English Parliament adjourns after a three-week session, having passed numerous laws, including the Pardon of Offences Act (requiring the specification of the offense for which the person is being pardoned by the King) and the Enforcement of the Statute of Provisors Act providing forfeiture of the office for certain violations.
↑Ivinskis, Zenonas (1988) [1930]. "Vytauto jaunystė ir jo veikimas iki 1392 m". In Paulius Šležas (ed.). Vytautas Didysis (in Lithuanian). Vilnius: Vyriausioji enciklopedijų redakcija. p.36. OCLC25726071.
12Urs Brachthäuser, Der Kreuzzug gegen Mahdiya 1390: Konstruktionen eines Ereignisses im spätmittelalterlichen Mediterraneum (The Crusade against Mahdiya, 1390: Reconstruction of an Event in the Late Medieval Mediterranean)(Brill, 2017)
↑Gudavičius, Edvardas (1999). Lietuvos istorija. Nuo seniausių laikų iki 1569 metų (in Lithuanian). Vilnius: Lietuvos rašytojų sąjungos leidykla. pp.173–174. ISBN9986-39-112-1.
↑Heitz, Gerhard; Rischer, Henning (1995). Geschichte in Daten. Mecklenburg-Vorpommern (in German). Münster-Berlin: Koehler&Amelang. p.187. ISBN3-7338-0195-4.
↑Watt, D. E. R.; Murray, A. L., eds. (2003), Fasti Ecclesiae Scotinanae Medii Aevi ad annum 1638, The Scottish Record Society, New Series, Volume 25 (Reviseded.), Edinburgh: The Scottish Record Society, ISBN0-902054-19-8, ISSN0143-9448