events
Emperor Diocletian and Maximian appoint Constantius Chlorus and Galerius as Caesars. This is considered the beginning of the Tetrarchy, known as the Quattuor Principes Mundi ("Four Rulers of the World").
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Diocletian
Roman emperor from 284 to 305
Diocletian, nicknamed Jovius, was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia. As with other Illyrian soldiers of the period, Diocles rose through the ranks of the military early in his…Source: Wikipedia (CC BY-SA)
Maximian
Roman emperor from 286 to 305
Maximian, nicknamed Herculius, was Roman emperor from 286 to 305. He was Caesar from 285 to 286, then Augustus from 286 to 305. He shared the latter title with his co-emperor and superior, Diocletian, whose political brain complemented Maximian's military brawn. Maximian…Source: Wikipedia (CC BY-SA)
Constantius Chlorus
Roman emperor from 305 to 306
Flavius Valerius Constantius, also called Constantius I, was a Roman emperor from 305 to 306. He was one of the four original members of the Tetrarchy established by Diocletian, first serving as caesar from 293 to 305 and then ruling as augustus until his death. Constantius was…Source: Wikipedia (CC BY-SA)
Galerius
Roman emperor from 305 to 311
Galerius Valerius Maximianus was Roman emperor from 305 to 311. He participated in the system of government later known as the Tetrarchy, first acting as caesar under Emperor Diocletian. In this period Galerius obtained victory warring against the Persian Sassanian Empire,…Source: Wikipedia (CC BY-SA)
Caesar (title)
Imperial title in the Roman Empire
Caesar is a title of imperial character. It derives from the cognomen of Julius Caesar. The change from being a surname to a title used by the Roman emperors can be traced to AD 68, following the fall of the Julio-Claudian dynasty. When used on its own, the title denoted heirs…Source: Wikipedia (CC BY-SA)
Tetrarchy
Roman system of power division among four rulers
The Tetrarchy was the system instituted by Roman emperor Diocletian in 293 AD to govern the ancient Roman Empire by dividing it between two emperors, the augusti, and their junior colleagues and designated successors, the caesares.Source: Wikipedia (CC BY-SA)
March 1
Day of the year
March 1 is the 60th day of the year in the Gregorian calendar; 305 days remain until the end of the year.Source: Wikipedia (CC BY-SA)