
Gallienus (s; Publius Licinius Egnatius Gallienus Augustus; c. 218 – 268) was Roman Emperor with his father Valerian from 253 to 260 and alone from 260 to 268. He ruled during the Crisis of the Third Century that nearly caused the collapse of the empire. While he won a number of military victories, he was unable to prevent the secession of impor...
Found on
http://en.wikipedia.org/wiki/Gallienus

Roman emperor jointly with his father, Valerian, from 253 until 260, then sole emperor to 268.[4 related articles]
Found on
http://www.britannica.com/eb/a-z/g/5

Roman emperor 253-268. His reign was a continual struggle against invasions and uprisings; at his death the empire was in a state of economic ruin and virtual anarchy. However, he was tolerant of Christianity and fond of the arts.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

P Licinius Gallienus was a Roman emperor, associated with his father Valerianus until the capture of the latter by the Persians in 260, when Gallienus continued to reign alone. His empire was limited by the revolt of most of the legions in the provinces, who chose their commanders as Caesars, and thus gave rise to the period known as the 'Time of t...
Found on
http://www.probertencyclopaedia.com/browse/CXG.HTM
No exact match found.