Praetorian prefect
In AD 381, he was in Constantinople, where he was notified that he had been appointed the Praetorian Prefect of both Illyricum and Italy, a command he held from AD 382 to 383. During his time as Praetorian prefect he received a number of laws to promulgate, including one from Gratian on 21 May 383, which condemned anyone who converted from Christianity to either Paganism, Judaism, or Manichaeism.