September 30489 – The Ostrogoths under Theoderic the Great defeat the forces of Odoacer for the second time. 737 – The Turgesh drive back an Umayyad invasion of Khuttal, follow them south of the Oxus, and capture their baggage train. 1139 – A magnitude 7.7 earthquake strikes the Caucasus mountains in the Seljuk Empire, causing mass destruction and killing up to 300,000 people. 1399 – Henry IV is proclaimed king of England. 1520 – Suleiman the Magnificent is proclaimed sultan of the Ottoman Empire.
April 18796 – King Æthelred I of Northumbria is murdered in Corbridge by a group led by his ealdormen, Ealdred and Wada. The patrician Osbald is crowned, but abdicates within 27 days. 1428 – Peace of Ferrara between Republic of Venice, Duchy of Milan, Republic of Florence and House of Gonzaga: ending of the second campaign of the Wars in Lombardy fought until the Treaty of Lodi in 1454, which will then guarantee the conditions for the development of the Italian Renaissance. 1506 – The cornerstone of the current St.
September 244 BC – Pharaoh Cleopatra VII of Egypt declares her son co-ruler as Ptolemy XV Caesarion. 44 BC – Cicero launches the first of his Philippicae (oratorical attacks) on Mark Antony. He will make 14 of them over the following months. 31 BC – Final War of the Roman Republic: Battle of Actium: Off the western coast of Greece, forces of Octavian defeat troops under Mark Antony and Cleopatra. 1192 – The Treaty of Jaffa is signed between Richard I of England and Saladin, leading to the end of the Third Crusade.
October 27312 – Constantine is said to have received his famous Vision of the Cross. 1275 – Traditional founding of the city of Amsterdam. 1524 – French troops lay siege to Pavia. 1553 – Condemned as a heretic, Michael Servetus is burned at the stake just outside Geneva. 1644 – Second Battle of Newbury in the English Civil War. 1682 – Philadelphia is founded in the Commonwealth of Pennsylvania. 1775 – King George III expands on his Proclamation of Rebellion in the Thirteen Colonies in his speech from the throne at the opening of Parliament.
December 30534 – The second and final edition of the Code of Justinian comes into effect in the Byzantine Empire. 999 – Battle of Glenmama: The combined forces of Munster and Meath under king Brian Boru inflict a crushing defeat on the allied armies of Leinster and Dublin near Lyons Hill in Ireland. 1066 – Granada massacre: A Muslim mob storms the royal palace in Granada, crucifies Jewish vizier Joseph ibn Naghrela and massacres most of the Jewish population of the city. 1419 – Hundred Years' War: Battle of La Rochelle.
February 181229 – The Sixth Crusade: Frederick II, Holy Roman Emperor, signs a ten-year truce with al-Kamil, regaining Jerusalem, Nazareth, and Bethlehem with neither military engagements nor support from the papacy. 1268 – The Battle of Wesenberg is fought between the Livonian Order and Dovmont of Pskov. 1332 – Amda Seyon I, Emperor of Ethiopia begins his campaigns in the southern Muslim provinces. 1478 – George, Duke of Clarence, convicted of treason against his older brother Edward IV of England, is executed in private at the Tower of London.
November 30978 – Franco-German war of 978–980: Holy Roman Emperor Otto II lifts the siege of Paris and withdraws. 1707 – Queen Anne's War: The second Siege of Pensacola comes to end with the failure of the British Empire and their Creek allies to capture Pensacola, Spanish Florida. 1718 – Great Northern War: King Charles XII of Sweden dies during a siege of the fortress of Fredriksten in Norway. 1782 – American Revolutionary War: Treaty of Paris: In Paris, representatives from the United States and Great Britain sign preliminary peace articles (later formalized as the 1783 Treaty of Paris).
August 311056 – After a sudden illness a few days previously, Byzantine Empress Theodora dies childless, thus ending the Macedonian dynasty. 1057 – Abdication of Byzantine Emperor Michael VI Bringas after just one year. 1218 – Al-Kamil becomes sultan of the Ayyubid dynasty. 1314 – King Haakon V of Norway moves the capital from Bergen to Oslo. 1422 – King Henry V of England dies of dysentery while in France. His son, Henry VI becomes King of England at the age of nine months. 1535 – Pope Paul III excommunicates English King Henry VIII from the church.
November 11308 – At Carnuntum, Emperor emeritus Diocletian confers with Galerius, Augustus of the East, and Maximianus, the recently returned former Augustus of the West, in an attempt to end the civil wars of the Tetrarchy. 1028 – Constantine VIII dies, ending his uninterrupted reign as emperor or co-emperor of the Byzantine Empire of 66 years. 1100 – Henry I of England marries Matilda of Scotland, the daughter of Malcolm III of Scotland and a direct descendant of the Saxon king Edmund Ironside; Matilda is crowned on the same day.
June 6913 – Constantine VII, the eight-year-old illegitimate son of Leo VI the Wise, becomes nominal ruler of the Byzantine Empire under the regency of a seven-man council headed by Patriarch Nicholas Mystikos, appointed by Constantine's uncle Alexander on his deathbed. 1505 – The M8.2–8.8 Lo Mustang earthquake affects Tibet and Nepal, causing severe damage in Kathmandu and parts of the Indo-Gangetic plain. 1513 – Battle of Novara. In the Italian Wars, Swiss troops defeat the French under Louis II de la Trémoille, forcing them to abandon Milan; Duke Massimiliano Sforza is restored.
