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Trebonianus Gallus
36th Emperor of the Roman Empire
Ritratto di trebonianno gallo III sec. dc. 01.JPG
Bust of Trebonianus Gallus
Reign 251 (with Hostilian);
251–53 (with Volusianus)
Full name Gaius Vibius Afinius Trebonianus Gallus
(from birth to accession);
Caesar Gaius Vibius Afinius Trebonianus Gallus Augustus (as emperor)
Born 206
Birthplace Italy
Died August 253 (aged 47)
Place of death Interamna
Predecessor Decius and Herennius Etruscus
Successor Aemilianus
Wife Afinia Gemina Baebiana
Issue Gaius Vibius Volusianus, Vibia Galla
Father Senatorial family

Trebonianus Gallus (Latin: Gaius Vibius Afinius Trebonianus Gallus Augustus;[1][2] 206 – August 253), also known as Gallus, was Roman Emperor from 251 to 253, in a joint rule with his son Volusianus.

Early life[edit]

Gallus was born in Italy, in a family with respected ancestry of 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 nominated governor of the Roman province of Moesia Superior, an appointment that showed the confidence of Emperor Trajan Decius in him. In Moesia, Gallus was a key figure in repelling the frequent invasion attacks by the Gothic tribes of the Danube and became popular with the army, catered to during his brief Imperial rule by his official image: military haircut, gladiatorial physique, intimidating stance (illustration, left).[3]

Rise to power[edit]

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 Hostilian, 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.[4] 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.

Bronze of Gallus dating from the time of his reign as Roman Emperor, the only surviving near-complete full-size 3rd-century Roman bronze (Metropolitan Museum of Art)[5]

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 the Roman territory while keeping their captives and plunder. In addition, it was agreed that they would be paid an annual subsidy.[6] Reaching Rome, Gallus' proclamation was formally confirmed by the Senate, with his son Volusianus being appointed Caesar. On June 24, 251, Decius was deified, but by July 15 Hostilian disappears from history—he may have died in an outbreak of plague.[7] Eager to show himself competent and gain popularity with the citizens, Gallus swiftly dealt with the epidemic, providing burial for the victims[citation needed].

Gallus may have also ordered a localized and uncoordinated persecution of Christians,[8] but the only solid evidence of this allegation is the imprisonment of Pope Cornelius in 252.[citation needed]

Like his predecessors, Gallus did not have an easy reign. In the East, an Antiochene nobleman, Mariades, revolted and began ravaging Syria and Cappadocia, then fled to the Persians. Gallus ordered his troops to attack the Persians, but Persian Emperor Shapur I invaded Armenia and destroyed a large Roman army, taking it by surprise at Barbalissos in 253. Shapur I then invaded the defenseless Syrian provinces, captured all of its legionary posts and ravaged its cities, including Antioch, without any response.[9] Persian invasions were repeated in the following year, but now Uranius Antoninus (a priest originally called Sampsiceramus), a descendant of the royal house of Emesa, confronted Shapur and forced him to retreat. He proclaimed himself emperor,[10] however, and minted coins with his image upon them.[11] On the Danube, Scythian tribes were once again on the loose, despite the peace treaty signed in 251. They invaded Asia Minor by sea, burned the great Temple of Artemis at Ephesus, and returned home with plunder. Lower Moesia was also invaded in early 253.[12] Aemilianus, governor of Moesia Superior and Pannonia, took the initiative of battle and defeated the invaders.


Trebonianus Gallus

Since the army was no longer pleased with the Emperor, the soldiers proclaimed Aemilianus emperor. With a usurper, supported by Pauloctus, threatening the throne, Gallus prepared for a fight. He recalled several legions and ordered reinforcements to return to Rome from Gaul under the command of the future emperor Publius Licinius Valerianus. Despite these dispositions, Aemilianus marched onto Italy ready to fight for his claim and caught Gallus at Interamna (modern Terni) before the arrival of Valerianus. What exactly happened there is not clear.[13] Later sources claim that after an initial defeat, Gallus and Volusianus were murdered by their own troops;[14] or Gallus did not have the chance to face Aemilianus at all because his army went over to the usurper.[15] In any case, both Gallus and Volusianus were killed in August 253.[16]


  1. ^ Southern, Pat, The Roman Empire From Severus To Constantine, Routledge, 2004, pg. 75
  2. ^ In Classical Latin, Gallus' name would be inscribed as CAIVS VIBIVS AFINIVS TREBONIANVS GALLVS AVGVSTVS.
  3. ^ Metropolitan Museum of Art: characteristics of the over-lifesize bronze portrait of Trebonianus Gallus, acc. no. 05.30
  4. ^ Potter (2004), pp.247–248.
  5. ^ Bronze portrait of Trebonianus Gallus, 05.30
  6. ^ The Cambridge Ancient History, pp.39–40.
  7. ^ Potter (2004), p.248.
  8. ^ The Cambridge Ancient History, p.40.
  9. ^ Potter (2004), pp.248–249.
  10. ^ The Cambridge Ancient History, p.40.
  11. ^ Potter (2004), pp.249–250.
  12. ^ Potter (2004), p.252.
  13. ^ See Bray (1997), p.38, for both versions of the story and their sources.
  14. ^ Potter (2004), p.252.
  15. ^ The Cambridge Ancient History, p.41.
  16. ^ Bray (1997), p.38.
  • Bray, John. Gallienus: A Study in Reformist and Sexual Politics, Wakefield Press, 1997. ISBN 1-86254-337-2
  • Bowman Alan K., Garnsey Peter, Cameron Averil (ed.). The Cambridge Ancient History: The Crisis of Empire, A.D. 193–337, Cambridge University Press, 2005. ISBN 0-521-30199-8.
  • Potter, David S. The Roman Empire at Bay AD 180–395, Routledge, 2004. ISBN 0-415-10058-5.

External links[edit]

Media related to Trebonianus Gallus at Wikimedia Commons

Regnal titles
Preceded by
Roman Emperor
Served alongside: Hostilian (251) and Volusianus (251–253)
Succeeded by
Political offices
Preceded by
Herennius Etruscus
Consul of the Roman Empire
with Volusianus
Succeeded by
Lucius Valerius Poplicola Balbinus Maximus

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