14th day events in history

April 14, 69 Vitellius, commander of the Rhine armies, defeats Emperor Otho in the Battle of Bedriacum and seizes the throne
April 14, 70 Siege of Jerusalem: Titus, son of emperor Vespasian, surrounds the Jewish capital, with four Roman legions
September 14, 81 Domitian becomes Emperor of the Roman Empire upon the death of his brother Titus
April 14, 193 Septimius Severus is proclaimed Roman Emperor by the army in Illyricum (in the Balkans)
October 14, 222 Pope Callixtus I is killed by a mob in Rome's Trastevere after a 5-year reign in which he had stabilized the Saturday fast three times per year, with no food, oil, or wine to be consumed on those days. Callixtus is succeeded by cardinal Urban I
March 14, 313 Emperor Jin Huidi is executed by Liu Cong, ruler of the Xiongnu state (Han Zhao)
September 14, 326 Helena of Constantinople discovers the True Cross and the Holy Sepulchre (Jesus's tomb) in Jerusalem
December 14, 557 Constantinople is severely damaged by an earthquake
September 14, 629 Emperor Heraclius enters Constantinople in triumph after his victory over the Persian Empire
February 14, 748 Abbasid Revolution: The Hashimi rebels under Abu Muslim Khorasani take Merv, capital of the Umayyad province Khorasan, marking the consolidation of the Abbasid revolt
July 14, 756 An Lushan Rebellion: Emperor Xuanzong flees the capital Chang'an as An Lushan's forces advance toward the city
September 14, 786 "Night of the three Caliphs": Harun al-Rashid becomes the Abbasid caliph upon the death of his brother al-Hadi. Birth of Harun's son al-Ma'mun
December 14, 835 Sweet Dew Incident: Emperor Wenzong of the Tang Dynasty conspires to kill the powerful eunuchs of the Tang court, but the plot is foiled
February 14, 842 Charles the Bald and Louis the German swear the Oaths of Strasbourg in the French and German languages
April 14, 966 After his marriage to the Christian Dobrawa of Bohemia, the pagan ruler of the Polans, Mieszko I, converts to Christianity, an event considered to be the founding of the Polish state
April 14, 972 Emperor Otto II married Princess Theophano, niece of Byzantine Emperor John Tzimisces, leading to a significant impact on German intellectual life, including interest in Greek literature and Byzantine art
February 14, 1014 Pope Benedict VIII crowns Henry of Bavaria, King of Germany and of Italy, as Holy Roman Emperor
April 14, 1028 Henry III, son of Conrad, is elected king of the Germans
August 14, 1040 King Duncan I is killed in battle against his first cousin and rival Macbeth. The latter succeeds him as King of Scotland
October 14, 1066 Norman Conquest: Battle of Hastings: In England on Senlac Hill, seven miles from Hastings, the Norman forces of William the Conqueror defeat the English army and kill King Harold II of England
February 14, 1076 Pope Gregory VII excommunicates Henry IV, Holy Roman Emperor
June 14, 1158 Munich is founded by Henry the Lion on the banks of the river Isar
September 14, 1180 Battle of Ishibashiyama in Japan
August 14, 1183 Taira no Munemori and the Taira clan take the young Emperor Antoku and the three sacred treasures and flee to western Japan to escape pursuit by the Minamoto clan (traditional Japanese date: Twenty-fifth Day of the Seventh Month of the Second Year of Juei)
April 14, 1205 Battle of Adrianople between Bulgarians and Crusaders
June 14, 1216 First Barons' War: Prince Louis of France captures the city of Winchester and soon conquers over half of the Kingdom of England
July 14, 1223 Louis VIII becomes King of France upon the death of his father, Philip II of France
May 14, 1264 Battle of Lewes: Henry III of England is captured and forced to sign the Mise of Lewes, making Simon de Montfort the de facto ruler of England
June 14, 1276 While taking exile in Fuzhou in southern China, away from the advancing Mongol invaders, the remnants of the Song Dynasty court hold the coronation ceremony for the young prince Zhao Shi, making him Emperor Duanzong of Song
June 14, 1285 Second Mongol invasion of Vietnam: Forces led by Prince Trần Quang Khải of the Trần Dynasty destroy most of the invading Mongol naval fleet in a battle at Chuong Duong
June 14, 1287 Kublai Khan defeats the force of Nayan and other traditionalist Borjigin princes in East Mongolia and Manchuria
December 14, 1287 St. Lucia's flood: The Zuiderzee sea wall in the Netherlands collapses, killing over 50,000 people
August 14, 1288 Count Adolf VIII of Berg grants town privileges to Düsseldorf, the village on the banks of the Düssel
April 14, 1294 Temür, grandson of Kublai, is elected Khagan of the Mongols and Emperor of the Yuan Dynasty with the reigning titles Oljeitu and Chengzong
January 14, 1301 Andrew III of Hungary dies, ending the Árpád dynasty in Hungary
October 14, 1322 Robert the Bruce of Scotland defeats King Edward II of England at Byland, forcing Edward to accept Scotland's independence
April 14, 1341 Sack of Saluzzo (Italy) by Italian-Angevine troops under Manfred V of Saluzzo
January 14, 1343 Arnošt of Pardubice becomes the last bishop of Prague and, subsequently, the first Archbishop of Prague
February 14, 1349 Several hundred Jews are burned to death by mobs while the remainder of their population is forcibly removed from the city of Strasbourg
August 14, 1352 War of the Breton Succession: Anglo-Bretons defeat the French in the Battle of Mauron
August 14, 1370 Charles IV, Holy Roman Emperor, grants city privileges to Carlsbad which is subsequently named after him
March 14, 1381 Chioggia concludes an alliance with Zadar and Trogir against Venice, which becomes changed in 1412 in Šibenik
June 14, 1381 Richard II of England meets leaders of Peasants' Revolt on Blackheath. The Tower of London is stormed by rebels who enter without resistance
August 14, 1385 Portuguese Crisis of 1383–85: Battle of Aljubarrota – Portuguese forces commanded by King John I and his general Nuno Álvares Pereira defeat the Castilian army of King John I
February 14, 1400 Richard II dies, most likely from starvation, in Pontefract Castle, on the orders of Henry Bolingbroke
August 14, 1415 Henry the Navigator leads Portuguese forces to victory over the Marinids at the Battle of Ceuta
April 14, 1434 The foundation stone of Cathedral St. Peter and St. Paul in Nantes, France is laid
October 14, 1465 Wallachian voivode Radu cel Frumos, younger brother of Vlad Ţepeş, issues a writ from his residence in Bucharest
April 14, 1471 In England, the Yorkists under Edward IV defeat the Lancastrians under the Earl of Warwick at the Battle of Barnet; the Earl is killed and Edward IV resumes the throne
March 14, 1489 The Queen of Cyprus, Catherine Cornaro, sells her kingdom to Venice