Diocletian
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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 o
Head of Diocletian wearing a corona civica, on display at Istanbul Archaeology Museums.
Panorama of amphitheatre in Salona.
Head of Carinus at the Centrale Montemartini.
Aureus of Diocletian minted c. 284, legend: imp c c val diocletianus p f aug.
Galerius
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Gaius 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
Diocletian
…ruled the Western Empire, while Diocletian reigned in the Eastern Empire as the senior Augustus. In 293, Diocletian delegated further, appointing Galerius and Constantius as junior colleagues (each with the title Caesar), under himself and Maximian respectively. Under the Tetrarchy, or "rule of four…
![Likely bust of Galerius in porphyry, found in 1993 at Gamzigrad and held at the National Museum [sr] in Zaječar, Serbia.](https://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Romuliana_Galerius_head.jpg/500px-Romuliana_Galerius_head.jpg)
Likely bust of Galerius in porphyry, found in 1993 at Gamzigrad and held at the National Museum [sr] in Zaječar, Serbia.
Diocletian, Galerius's father-in-law and senior emperor
Detail of Galerius attacking Narseh on the Arch of Galerius at Thessaloniki, Greece, the city where Galerius carried out most of his administrative actions.
Aureus of Galerius as Caesar. The reverse depicts the god Jupiter.