|41st Emperor of the Roman Empire| Bust of Gallienus
|Reign||253–260 with Valerian; |Full name||Publius Licinius
Egnatius Gallienus (from birth to accession); Caesar Publius
Licinius Egnatius Gallienus Augustus (as emperor) |Died||268
(aged 50)| |Place of death||Mediolanum, Italy|
|Issue||Valerianus, Saloninus, Marinianus| Gallienus (Latin:
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 important provinces. Rise to power The exact birth
date of Gallienus is unknown. The Greek chronicler John Malalas
and the Epitome de Caesaribus report that he was about 50 years
old at the time of his death, meaning he was born around 218. He
was the son of emperor Valerian and Mariniana, who may have been
of senatorial rank, possibly the daughter of