Memor was a Roman usurper

Roman usurper

Usurpers are individuals or groups of individuals who obtain and maintain the power or rights of another by force and without legal authority. Usurpation was endemic during roman imperial era, especially from the crisis of the third century onwards, when political instability became the rule.The...

 against Emperor

Roman Emperor

The Roman emperor was the ruler of the Roman State during the imperial period . The Romans had no single term for the office although at any given time, a given title was associated with the emperor...

 Gallienus

Gallienus

Gallienus was Roman Emperor with his father Valerian from 253 to 260, and alone from 260 to 268. He took control of the Empire at a time when it was undergoing great crisis...

.

Memor was a Northern African Roman official, responsible for the Egyptian grain supply to Rome

Grain supply to the city of Rome

In classical antiquity, the grain supply to the city of Rome could not be met entirely from the surrounding countryside, which was taken up by the villas and parks of the aristocracy and which produced mainly fruit, vegetables and other perishable goods...

. After the defeat of the Macriani

Macriani

Macriani is the name of three Roman usurpers who tried to gain the Roman throne from Emperor Gallienus. They were:*Macrianus Major, the father*Macrianus Minor, first son*Quietus, second son...

 usurpers, Emperor Gallienus sent his general Aurelius Theodotus

Theodotus

in workTheodotus is the name of:*Theodotus of Aetolia *Theodotus Hemiolius *Theodotus of Chios *Theodotus of Byzantium *Theodotus *Theodotus of Rome...

 to Egypt to secure his hold on the province. Theodotus defeated Mussius Aemilianus

Mussius Aemilianus

Lucius Mussius Aemilianus was a Roman usurper.Mussius Aemilianus probably was of Italian stock. He was an officer in the Roman army under Philip the Arab and Valerian. Under the latter he became praefect of Egypt. He supported the rebellion of the Macriani against Gallienus...

who had staged a rebellion. His soldiers also killed Memor who had begun preparations for a rebellion.