September 12 – King Richard II of England summons the English parliament, directing that the members of the House of Lords and the House of Commons assemble at Westminster on November 3.
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.[7]
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.[15]
^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.
^ abUrs 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)
^Sumption, Jonathan (2009). The Hundred Years War, Volume III: Divided Houses. Faber and Faber. p. 781. ISBN 978-0-571-24012-8.
^Gudavičius, Edvardas (1999). Lietuvos istorija. Nuo seniausių laikų iki 1569 metų (in Lithuanian). Vilnius: Lietuvos rašytojų sąjungos leidykla. pp. 173–174. ISBN 9986-39-112-1.
^Heitz, Gerhard; Rischer, Henning (1995). Geschichte in Daten. Mecklenburg-Vorpommern (in German). Münster-Berlin: Koehler&Amelang. p. 187. ISBN 3-7338-0195-4.
^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 (Revised ed.), Edinburgh: The Scottish Record Society, ISBN 0-902054-19-8, ISSN0143-9448