May 20 in History 325 – The First Council of Nicaea is formally opened, starting the first ecumenical council of the Christian Church. 491 – Empress Ariadne marries Anastasius I. The widowed Augusta is able to choose her successor for the Byzantine throne, after Zeno (late emperor) dies of dysentery. 685 – The Battle of Dun Nechtain is…
May 19 in History 639 – Ashina Jiesheshuai and his tribesmen assaulted Emperor Taizong at Jiucheng Palace. 715 – Pope Gregory II is elected. 1051 – Henry I of France marries the Russian princess, Anne of Kiev. 1445 – John II of Castile defeats the Infantes of Aragon at the First Battle of Olmedo. 1499 – Catherine of Aragon is married…
May 16 in History 946 – Emperor Suzaku abdicates the throne in favor of his brother Murakami who becomes the 62nd emperor of Japan. 1204 – Having been elected on May 9, Baldwin IX, Count of Flanders is crowned as the first Emperor of the Latin Empire. 1426 – Gov. Thado of Mohnyin becomes king of Ava. 1527 –…
May 15 in History 495 BC – A newly constructed temple in honour of the god Mercury was dedicated in ancient Rome on the Circus Maximus, between the Aventine and Palatine hills. To spite the senate and the consuls, the people awarded the dedication to a senior military officer, Marcus Laetorius. 221 – Liu…
May 10 in History 28 BC – A sunspot is observed by Han dynasty astronomers during the reign of Emperor Cheng of Han, one of the earliest dated sunspot observations in China. 1291 – Scottish nobles recognize the authority of Edward I of England pending…
May 8 in History 453 BC – Spring and Autumn period: The house of Zhao defeats the house of Zhi, ending the Battle of Jinyang, a military conflict between the elite families of the State of Jin. 413 – Emperor Honorius signs an edict providing tax relief for the Italian provinces Tuscia, Campania, Picenum, Samnium, Apulia, Lucania and Calabria,…
May 4 in History 1256 – 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…
April 30 in history 311 – The Diocletianic Persecution of Christians in the Roman Empire ends. 313 – Battle of Tzirallum: Emperor Licinius defeats Maximinus II and unifies the Eastern Roman Empire. 642 – Chindasuinth is proclaimed king by the Visigothic nobility and bishops. 1315 – Enguerrand de Marigny is hanged at the instigation of Charles, Count of Valois. 1492 – Spain…
April 29 in history 1091 – Battle of Levounion: The Pechenegs are defeated by Byzantine Emperor Alexios I Komnenos. 1386 – Battle of the Vikhra River: The Principality of Smolensk is defeated by the Grand Duchy of Lithuania and becomes its vassal. 1429 – Joan of Arc arrives to relieve the Siege of Orléans. 1483 – Gran Canaria,…
April 25 in History 404 BC – Admiral Lysander and King Pausanias of Sparta blockade Athens and bring the Peloponnesian War to a successful conclusion. 775 – The Battle of Bagrevand puts an end to an Armenian rebellion against the Abbasid Caliphate. Muslim control over Transcaucasia is solidified and its Islamization begins, while several major…