Gallienus

Publius Licinius Egnatius Gallienus (218-268) ruled the Roman Empire as co-emperor with his father Valerian from 253 to 260, and then as the sole Roman Emperor from 260 to 268. He took control of the empire at a time when it was undergoing great crisis. His record in dealing with those crises is mixed, as he won a number of military victories but was unable to keep much of his realm from seceding.

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One of the key characteristics of the Crisis of the Third Century was the inability of the Emperors to maintain their hold on the Imperium for any marked length of time. An exception to this rule was the reign of the Emperor Gallienus. The fact that Gallienus served as junior Emperor with his father, Valerian, from 253 to 260 may have had something to do with his successes. Father and son each wielded his authority over a smaller area, thus allowing for more flexible control and imperial presence. Another, more probable reason, lay in Gallienus's success in convincing Rome that he was the best man for the job. However, Gallienus had to handle many rebellions of the so-called "Gallienus usurpers".

Roman Empire: The Roman Empire is the term conventionally used to describe the Ancient Roman polity in the centuries following its reorganization under the leadership of Octavian (better known as Caesar Augustus)....

Valerian: Valerian may mean:...

253: :For the book see 253 (book)....