Probianus was a member of the
Petronii Probi, a family of the senatorial aristocracy. He was the son of
Pompeius Probus, consul in 310, the father of
Petronius Probinus, consul in 341, and of the poet
Faltonia Betitia Proba, and the grandfather of
Sextus Petronius Probus, consul in 371. Probianus was proconsul of
Africa in 315–317,
consul in 322, and
praefectus urbi of Rome from October 8, 329, to April 12, 331. == Sources ==