Concept

Trebonianus Gallus

Summary
Gaius Vibius Trebonianus Gallus (206 – August 253) was Roman emperor from June 251 to August 253, in a joint rule with his son Volusianus. Gallus was born in Italy, in a family with respected Etruscan senatorial background. He had two children in his marriage with Afinia Gemina Baebiana: Gaius Vibius Volusianus, later emperor, and a daughter, Vibia Galla. His early career was a typical cursus honorum, with several appointments, both political and military. He was suffect consul and in 250 was made governor of the Roman province of Moesia Superior, an appointment that showed the confidence of Emperor Decius in him. In June 251, Decius and his co-emperor and son Herennius Etruscus died in the Battle of Abrittus at the hands of the Goths they were supposed to punish for raids into the empire. According to rumours supported by Dexippus (a contemporary Greek historian) and the thirteenth Sibylline Oracle, Decius' failure was largely owing to Gallus, who had conspired with the invaders. In any case, when the army heard the news, the soldiers proclaimed Gallus emperor, despite Hostilianus, Decius' surviving son, ascending the imperial throne in Rome. This action of the army, and the fact that Gallus seems to have been on good terms with Decius' family, makes Dexippus' allegation improbable. Gallus did not back down from his intention to become emperor, but accepted Hostilian as co-emperor, perhaps to avoid the damage of another civil war. Anxious to secure his position at Rome and stabilize the situation on the Danube frontier, Gallus made peace with the Goths. Peace terms allowed the Goths to leave Roman territory while keeping their captives and plunder. In addition, it was agreed that they would be paid an annual subsidy. Reaching Rome, Gallus' proclamation was formally confirmed by the Senate, with his son Volusian being appointed Caesar. On 24 June 251, Decius was deified, but by November Hostilian disappears from history—he may have died in an outbreak of plague. Gallus may have also ordered a localized and uncoordinated persecution of Christians.
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