August 113114 BC – The Mesoamerican Long Count calendar, used by several pre-Columbian Mesoamerican civilizations, notably the Maya, begins. 2492 BC – Traditional date of the defeat of Bel by Hayk, progenitor and founder of the Armenian nation. 106 – The south-western part of Dacia (modern Romania) becomes a Roman province: Roman Dacia. 355 – Claudius Silvanus, accused of treason, proclaims himself Roman Emperor against Constantius II. 490 – Battle of Adda: The Goths under Theodoric the Great and his ally Alaric II defeat the forces of Odoacer on the Adda River, near Milan.
December 291170 – Thomas Becket, Archbishop of Canterbury, is assassinated inside Canterbury Cathedral by followers of King Henry II; he subsequently becomes a saint and martyr in the Anglican Communion and the Catholic Church. 1503 – The Battle of Garigliano was fought between a Spanish army under Gonzalo Fernández de Córdoba and a French army commanded by Ludovico II, Marquess of Saluzzo. 1607 – According to John Smith, Pocahontas, daughter of Powhatan leader Wahunsenacawh, successfully pleads for his life after tribal leaders attempt to execute him.
October 1833 – Heartbroken by the deaths of her sons Nero and Drusus, and banished to the island of Pandateria by Tiberius, Agrippina the Elder dies of self-inflicted starvation. 320 – Pappus of Alexandria, Greek philosopher, observes an eclipse of the Sun and writes a commentary on The Great Astronomer (Almagest). 614 – King Chlothar II promulgates the Edict of Paris (Edictum Chlotacharii), a sort of Frankish Magna Carta that defends the rights of the Frankish nobles while it excludes Jews from all civil employment in the Frankish Kingdom.
September 25275 – For the last time, the Roman Senate chooses an emperor; they elect 75-year-old Marcus Claudius Tacitus. 762 – Led by Muhammad al-Nafs al-Zakiyya, the Hasanid branch of the Alids begins the Alid Revolt against the Abbasid Caliphate. 1066 – In the Battle of Stamford Bridge, Harald Hardrada, the invading King of Norway, is defeated by King Harold II of England. 1237 – England and Scotland sign the Treaty of York, establishing the location of their common border.
March 15474 BC – Roman consul Aulus Manlius Vulso celebrates an ovation for concluding the war against Veii and securing a forty years truce. 44 BC – The assassination of Julius Caesar takes place on the Ides of March. 493 – Odoacer, the first barbarian King of Italy after the fall of the Western Roman Empire, is slain by Theoderic the Great, king of the Ostrogoths, while the two kings were feasting together. 856 – Michael III, emperor of the Byzantine Empire, overthrows the regency of his mother, empress Theodora (wife of Theophilos) with support of the Byzantine nobility.
January 18474 – Seven-year-old Leo II succeeds his maternal grandfather Leo I as Byzantine emperor. He dies ten months later. 532 – Nika riots in Constantinople fail. 1126 – Emperor Huizong abdicates the Chinese throne in favour of his son Emperor Qinzong. 1486 – King Henry VII of England marries Elizabeth of York, daughter of Edward IV, uniting the House of Lancaster and the House of York. 1562 – Pope Pius IV reopens the Council of Trent for its third and final session. 1586 – The magnitude 7.
1954January 1954 January 1 – The Soviet Union ceases to demand war reparations from West Germany. January 3 – The Italian broadcaster RAI officially begins transmitting. January 7 – Georgetown-IBM experiment: The first public demonstration of a machine translation system is held in New York, at the head office of IBM. January 10 – BOAC Flight 781, a de Havilland Comet jet plane, disintegrates in mid-air due to metal fatigue, and crashes in the Mediterranean near Elba; all 35 people on board are killed.
March 4AD 51 – Nero, later to become Roman emperor, is given the title princeps iuventutis (head of the youth). 306 – Martyrdom of Saint Adrian of Nicomedia. 852 – Croatian Knez Trpimir I issues a statute, a document with the first known written mention of the Croats name in Croatian sources. 938 – Translation of the relics of martyr Wenceslaus I, Duke of Bohemia, Prince of the Czechs. 1152 – Frederick I Barbarossa is elected King of Germany. 1238 – The Battle of the Sit River begins two centuries of Mongol horde domination of Russia.
October 25285 or 286 – Execution of Saints Crispin and Crispinian during the reign of Diocletian, now the patron saints of leather workers, curriers, and shoemakers. 473 – Emperor Leo I acclaims his grandson Leo II as Caesar of the East Roman Empire. 1147 – Seljuk Turks defeat German crusaders under Conrad III at the Battle of Dorylaeum. 1147 – Reconquista: After a siege of four months, crusader knights reconquer Lisbon. 1415 – Hundred Years' War: Henry V of England, with his lightly armoured infantry and archers, defeats the heavily armoured French cavalry in the Battle of Agincourt.
October 201568 – The Spanish Duke of Alba defeats a Dutch rebel force under William the Silent. 1572 – Eighty Years' War: Three thousand Spanish soldiers wade through fifteen miles of water in one night to effect the relief of Goes. 1740 – France, Prussia, Bavaria and Saxony refuse to honour the Pragmatic Sanction, and the War of the Austrian Succession begins. 1774 – American Revolution: The Continental Association, a nonconsumption and nonimportation agreement against the British Isles and the British West Indies, is adopted by the First Continental Congress.