St. Mesrop Mashtots, Armenian theologian and linguist dies.
Hugo the Great, earl of Paris/duke of Francia, dies at about 55.
Northern Crusades: Grand Duchy of Lithuania and the Teutonic Knights meet in the Battle of Rudau.
Jogaila founded the archdiocese of Vilnius and provided land for the Bishop’s headquarters.
Following the successful campaigns during the Ottoman Interregnum, Musa Çelebi, one of the sons of Bayezid I, becomes Sultan with the support of Mircea I of Wallachia.
Rudolf Agricola, Roelof Huysman, Dutch humanist/organist is born.
At a grand feast, Philip the Good of Burgundy took the "vow of the pheasant," by which he swore to fight the Turks.
The Houses of York and Lancaster battled again at St. Alban’s. Queen Margaret defeated the Earl of Warwick and freed Henry VI.
Charles de Bourbon, officer/governor, Lombardy is born.
Duke Friedrich and Duke Johann attempt to subdue the peasantry of Dithmarschen, Denmark, in the Battle of Hemmingstedt.