Trebonianus Gallus

Imperator Caesar Gaius Vibius Trebonianus Gallus Augustus

Reign 251 AD – 253 AD
Dynasty Crisis of Third Century
Born c. 206 AD
Died 253 AD

Gaius Vibius Trebonianus Gallus was governor of Moesia Superior when Decius and his son were killed fighting the Goths at the Battle of Abritus in 251 AD. The surviving army acclaimed him emperor. He made a controversial peace with the Goths, allowing them to withdraw with their captives and loot, a decision condemned by ancient sources. His reign was plagued by the Plague of Cyprian, a devastating pandemic, and by the revolt of the able general Aemilianus. He was killed by his own troops when they heard Aemilianus was advancing.

The APOLL SALVTARI type is a direct numismatic response to a pandemic, one of only a few Roman coin types explicitly invoking divine protection against plague. Trebonianus Gallus's reign documents the empire at near-breaking point: external pressure, pandemic, and provincial revolt, all within two years.

Key Events

251 AD Decius killed at Battle of Abritus; Trebonianus Gallus acclaimed emperor by surviving troops
251 AD Made peace with the Goths on disputed terms; adopted Decius's surviving son Hostilian as Caesar
251 AD Hostilian died of plague; Gallus associated his own son Volusianus as co-emperor
252–253 AD Reign severely disrupted by the Plague of Cyprian and renewed Gothic incursions
253 AD Aemilianus, governor of Moesia, acclaimed emperor; Gallus's troops deserted to Aemilianus and killed him

Coinage

Trebonianus Gallus struck coinage in his own name and jointly with his son Volusianus as co-emperor. The portrait style follows the hard-faced Crisis-era aesthetic. The antoninianus is the dominant silver denomination. SALVS AVGG and LIBERTAS PVBLICA types attempt to project stability; the APOLL SALVTARI (Apollo the Saviour) types specifically invoke divine protection against the plague.

Denominations

Antoninianus Sestertius As

Notable Types

  • APOLL SALVTARI (Apollo the Saviour), a plague-response type
  • SALVS AVGG types
  • LIBERTAS PVBLICA types
  • Joint types with Volusianus

Common Reverses

APOLL SALVTARI SALVS AVGG LIBERTAS PVBLICA VICTORIA AVGG PAX AETERNA

Active Mints

Rome Antioch Milan

Further Reading

  • Roman Imperial Coinage, Volume IV, Part III, Harold Mattingly & Edward A. Sydenham
  • Roman Coins and Their Values, Volume III, David R. Sear