Person

Gallienus

c. 218–268 · 3rd century · Also known as Publius Licinius Egnatius Gallienus

Gallienus was Roman emperor from 253 to 268, first with his father Valerian and alone after Valerian's capture by the Persians in 260. His reign saw the worst of the 3rd-century crisis: the Gallic and Palmyrene regions broke away, and Alemanni, Goths and others invaded. He defeated the Alemanni near Milan, reorganised the cavalry, and was murdered by his officers in 268.

Gallienus
Image: Sailko · CC BY 3.0 · Wikimedia Commons

Mentioned in 1 profile

AlemanniMilitary

Mentioned in 2 state histories

Gallic EmpirePalmyrene Empire

See also

Cite this entry
APA
The Epoch Institute. (2026). Gallienus. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/gallienus
MLA
“Gallienus.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/gallienus. Accessed .
Chicago
The Epoch Institute. “Gallienus.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/gallienus.
Harvard
The Epoch Institute (2026) ‘Gallienus’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/gallienus (Accessed: ).

Last reviewed October 2026Random entry ↻