Gallic Empire: the story on HearLore

Gallic Empire

In the summer of 260, King Odaenathus gained control of Egypt and Syria while Emperor Valerian was captured by the Sasanian Empire. This left his son Gallienus in very shaky control of the western provinces. Postumus served as governor of Germania Superior and Inferior at the Rhine border during this chaos. He protected Germania Inferior against an invasion led by the Franks that same year. The Roman field army had been defeated in the east, leaving the frontier exposed to barbarian raids. Postumus defeated the Frankish forces at Empel so decisively that there were no further Germanic raids for ten years. This military success made him one of the most powerful men in the western reaches of the Roman Empire. Gallienus's son Saloninus and the praetorian prefect Silvanus remained at Colonia Agrippina to keep the young heir out of danger. They also acted as a check on Postumus' ambitions. In 260 Postumus besieged Colonia Agrippina and put Saloninus and Silvanus to death. This act made his revolt official.

Parallel Government Structures

Postumus did not make any effort to extend his control into Italy or to depose Gallienus directly. Instead he established parallel institutions modelled on the Roman Empire's central government. His regime had its own Praetorian Guard to protect the new state. Two annually elected consuls governed alongside the emperor, though not all names have survived. Numismatic evidence shows Postumus held the office of consul five times. Lugdunum was one of the most important cities under his control. He likely established his capital at Colonia Agrippina or Augusta Treverorum. The Gallic Empire functioned de facto as a separate state from 260 to 274. It included territories of Germania, Gaul, Britannia, and Hispania at its height. These administrative choices allowed the breakaway region to operate independently without attempting to conquer Rome itself.

Who founded the Gallic Empire in 260?

Postumus founded the Gallic Empire in 260 after he besieged Colonia Agrippina and executed Saloninus and Silvanus. He served as governor of Germania Superior and Inferior before declaring his revolt against Emperor Gallienus.

When did the Gallic Empire exist from start to finish?

The Gallic Empire functioned de facto as a separate state from 260 to 274. It ended when Aurelian defeated Tetricus at the Battle of Châlons in 274.

What territories were included in the Gallic Empire at its height?

At its height the Gallic Empire included territories of Germania, Gaul, Britannia, and Hispania. These regions formed a breakaway region that operated independently without attempting to conquer Rome itself.

How many times did Postumus hold the office of consul according to numismatic evidence?

Numismatic evidence shows Postumus held the office of consul five times. His regime established parallel institutions modelled on the Roman Empire's central government including an own Praetorian Guard.

Who was the last emperor of the Gallic Empire before Aurelian defeated him?

Gaius Pius Esuvius Tetricus was the last emperor of the Gallic Empire before he surrendered to Aurelian. He ruled until 274 when Aurelian defeated him at the Battle of Châlons.

Gallic Empire

Parallel Government Structures

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Common questions

Who founded the Gallic Empire in 260?

When did the Gallic Empire exist from start to finish?

What territories were included in the Gallic Empire at its height?

How many times did Postumus hold the office of consul according to numismatic evidence?

Who was the last emperor of the Gallic Empire before Aurelian defeated him?

Battles Against Usurpers

The Tetricus Dynasty

Coins and Provincial Identity

Battle And Integration