What is "pacatianus"

'''Tiberius Claudius Marinus Pacatianus ''' (died c. 248) was a usurper in the Danube area of the Roman Empire during the time of Philip the Arab.

He is known from coins, and from mentions in Zosimus and Zonaras, who say that he was an officer in one of the Danube legions. According to Zosimus, the revolts of Pacatianus in Moesia (he probably controlled Viminacium) and Iotapianus in Syria prompted Philip to make an offer to the Roman Senate to step down, but the senator Decius (who was sent by Philip to deal with the rebellion), correctly predicted that Pacatianus would soon be killed by his own men before his own arrival.

Pacatianus was vicarius of Roman Britain in 319. His holding the post is recorded in the Codex Theodosianus although little else is known of him. He presided over a period of economic instability with coin hoards indicating high inflation although several high status villas were rebuilt around this time and with Christian mosaics being built into them.