September 9, 2017
On 9 September 337 CE Constantine II , Constantius II, and Constans I succeeded their father Constantine I as co-emperors, dividing the Roman Empire between three Augusti.
March 26, 2017
Eastern Roman Emperor Maurice proclaimed his son, Theodosius, co-emperor on 26 March 590.
March 11, 2016
Sir John Hawkwood (d. 1394) led Paduan forces against the Veronese at the Battle of Castagnaro, fought on 11 March 1387.