Publius Licinius Egnatius Marinianus (- 268) was the third and youngest son of Roman 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...

 and Augusta

Augusta (honorific)

Augusta was the imperial honorific title of empresses. It was given to the women of the Roman and Byzantine imperial families. In the third century, Augustae could also receive the titles of Mater castrorum and Mater Patriae .The title implied the greatest prestige, with the Augustae able to...

Cornelia Salonina

Cornelia Salonina

Julia Cornelia Salonina was an Augusta, wife of Roman Emperor Gallienus and mother of Valerian II, Saloninus, and Marinianus.-Early life:...

.

Gallienus appointed him together with Paternus as Consul in early 268. His two older brothers, Valerianus

Valerian II

Publius Licinius Cornelius Valerianus , also known as Valerian II, was the eldest son of Roman Emperor Gallienus and Augusta Cornelia Salonina who was of Greek origin and grandson of the Emperor Valerian I who was of a noble and traditional senatorial family.Shortly after his acclamation as Emperor...

 and Saloninus

Saloninus

Publius Licinius Cornelius Saloninus Valerianus was Roman Emperor in 259 or 260.-Early life:Saloninus was born around the year 242. His father was the later emperor Gallienus, his mother Cornelia Salonina, a Greek from Bithynia...

 had died earlier, and thus he was the successor to the throne.

Marinianus, along with his uncle Valerianus Minor, perished during the autumn of 268 in a purge of Gallienus’ partisans.

Note