February 171370 – Northern Crusades: Grand Duchy of Lithuania and the Teutonic Knights meet in the Battle of Rudau. 1411 – Following the successful campaigns during the Ottoman Interregnum, Musa Çelebi, one of the sons of Bayezid I, becomes Sultan of the Ottoman Empire with the support of Mircea I of Wallachia. 1500 – Duke Friedrich and Duke Johann attempt to subdue the peasantry of Dithmarschen, Denmark, in the Battle of Hemmingstedt.
December 2536 – Forces of Emperor Guangwu of the Eastern Han, under the command of Wu Han, conquer the separatist Chengjia empire, reuniting China. 274 – A temple to Sol Invictus is dedicated in Rome by Emperor Aurelian. 333 – Roman Emperor Constantine the Great elevates his youngest son Constans to the rank of Caesar. 336 – First documentary sign of Christmas celebration in Rome. 350 – Vetranio meets Constantius II at Naissus (Serbia) and is forced to abdicate his imperial title. Constantius allows him to live as a private citizen on a state pension.
August 161 BC – Wang Mang consolidates his power in China and is declared marshal of state. Emperor Ai of Han, who died the previous day, had no heirs. 942 – Start of the four-day Battle of al-Mada'in, between the Hamdanids of Mosul and the Baridis of Basra over control of the Abbasid capital, Baghdad. 963 – Nikephoros II Phokas is crowned emperor of the Byzantine Empire. 1328 – The House of Gonzaga seizes power in the Duchy of Mantua, and will rule until 1708.
May 22192 – Dong Zhuo is assassinated by his adopted son Lü Bu. 760 – Fourteenth recorded perihelion passage of Halley's Comet. 853 – A Byzantine fleet sacks and destroys undefended Damietta in Egypt. 1176 – The Hashshashin (Assassins) attempt to assassinate Saladin near Aleppo. 1200 – King John of England and King Philip II of France sign the Treaty of Le Goulet. 1246 – Henry Raspe is elected anti-king of the Kingdom of Germany in opposition to Conrad IV. 1254 – Serbian King Stefan Uroš I and the Republic of Venice sign a peace treaty.
December 16714 – Pepin of Herstal, mayor of the Merovingian palace, dies at Jupille (modern Belgium). He is succeeded by his infant grandson Theudoald, while his widow Plectrude holds actual power in the Frankish Kingdom. 755 – An Lushan revolts against Chancellor Yang Guozhong at Yanjing, initiating the An Lushan Rebellion during the Tang dynasty of China. 1431 – Hundred Years' War: Henry VI of England is crowned King of France at Notre Dame in Paris.
February 21452 or 453 – Severianus, Bishop of Scythopolis, is martyred in Palestine. 1245 – Thomas, the first known Bishop of Finland, is granted resignation after confessing to torture and forgery. 1440 – The Prussian Confederation is formed. 1613 – Mikhail I is unanimously elected Tsar by a national assembly, beginning the Romanov dynasty of Imperial Russia. 1797 – A force of 1,400 French soldiers invaded Britain at Fishguard in support of the Society of United Irishmen. They were defeated by 500 British reservists.
May 41256 – The Augustinian monastic order is constituted at the Lecceto Monastery when Pope Alexander IV issues a papal bull Licet ecclesiae catholicae. 1415 – Religious reformers John Wycliffe and Jan Hus are condemned as heretics at the Council of Constance. 1436 – Assassination of the Swedish rebel (later national hero) Engelbrekt Engelbrektsson 1471 – Wars of the Roses: The Battle of Tewkesbury: Edward IV defeats a Lancastrian Army and kills Edward of Westminster, Prince of Wales.
June 51257 – Kraków, in Poland, receives city rights. 1284 – Battle of the Gulf of Naples: Roger of Lauria, admiral to King Peter III of Aragon, destroys the Neapolitan fleet and captures Charles of Salerno. 1288 – The Battle of Worringen ends the War of the Limburg Succession, with John I, Duke of Brabant, being one of the more important victors. 1610 – The masque Tethys' Festival is performed at Whitehall Palace to celebrate the investiture of Henry Frederick, Prince of Wales.
November 24380 – Theodosius I makes his adventus, or formal entry, into Constantinople. 1190 – Conrad of Montferrat becomes King of Jerusalem upon his marriage to Isabella I of Jerusalem. 1221 – Genghis Khan defeats the renegade Khwarazmian prince Jalal al-Din at the Battle of the Indus, completing the Mongol conquest of Central Asia. 1227 – Gąsawa massacre: At an assembly of Piast dukes at Gąsawa, Polish Prince Leszek the White, Duke Henry the Bearded and others are attacked by assassins while bathing.
August 17310 – Pope Eusebius dies, possibly from a hunger strike, shortly after being banished by the Emperor Maxentius to Sicily. 682 – Pope Leo II begins his pontificate. 986 – Byzantine–Bulgarian wars: Battle of the Gates of Trajan: The Bulgarians under the Comitopuli Samuel and Aron defeat the Byzantine forces at the Gate of Trajan, with Byzantine Emperor Basil II barely escaping. 1186 – Georgenberg Pact: Ottokar IV, Duke of Styria and Leopold V, Duke of Austria sign a heritage agreement in which Ottokar gives his duchy to Leopold and to his son Frederick under the stipulation that Austria and Styria would henceforth remain undivided.
