May 1 in History 475 BC – Roman consul Publius Valerius Poplicola celebrates a Roman triumph for his victory over Veii and the Sabines. 305 – Diocletian and Maximian retire from the office of Roman emperor. 524 – King Sigismund of Burgundy is executed at Orléans after an eight-year reign and is succeeded by his brother Godomar. 880 – The Nea Ekklesia is inaugurated in Constantinople, setting…
April 8 in History 217 – Roman Emperor Caracalla is assassinated. He is succeeded by his Praetorian Guard prefect, Marcus Opellius Macrinus. 632 – King Charibert II is assassinated at Blaye (Gironde), along with his infant son Chilperic. 876 – The Battle of Dayr al-‘Aqul saves Baghdad from the Saffarids. 1093 – The new Winchester Cathedral is dedicated by Walkelin. 1139 – Roger II of…
January 23 in History 393 – Roman Emperor Theodosius I proclaims his eight-year-old son Honorius co-emperor. 971 – Using crossbows, Song dynasty troops soundly defeat a war elephant corps of the Southern Han at Shao. 1264 – In the conflict between King Henry III of England and his rebellious barons led by Simon de Montfort, King Louis IX of France issues the Mise…