Gellius Maximus (d. 219) was a Roman usurper. Events Legio III Gallica and IV Scythica are disbanded by Roman Emperor Elagabalus after their leaders, Verus and Gellius Maximus, rebel. ... Usurpers were a common feature of the late Roman Empire, especially from the so-called crisis of the third century onwards, when political instability became the rule. ...

Gellius Maximus was the son of a physician and a member of the senate. He served as an officer in Legio IV Scythica in Syria and took advantage of the turmoil during the reign of Heliogabalus to procliam himself emperor. The rebellion was soon extinguished and Gellius Maximus was executed. The Roman Senate (Latin, Senatus) was a deliberative body which was important in the government of both the Roman Republic and the Roman Empire. ... Legio IV Scythica was a Roman legion levied by Marcus Antonius around 42 BC, for his campaign against the Parthian empire, hence the cognomen Parthica. ... Varius Avitus Bassianus Marcus Aurelius Antoninus, (c. ... Roman Emperor is the title historians use to refer to rulers of the Roman Empire, after the epoch conventionally named the Roman Republic. ...