Quintus Clodius Hermogenianus Olybrius

Quintus Clodius Hermogenianus Olybrius (floruit 361-384) was a Roman politician, praefectus urbi of Rome in 368–370 and Roman consul in 379. Olybrius has been characterized as belonging to "the breed of flexible politicians who did well both under Valentinian I [...] and under Gratian."

Olybrius was a member of the senatorial aristocracy of Rome.

He was the son of Clodius Celsinus Adelphius, who had been praefectus urbi in 351, and of Faltonia Betitia Proba, a poet. His brother, Faltonius Probus Alypius, was praefectus urbi of Rome in 391. Proba converted to Christianity, and later had her husband and their sons, Olybrius included, convert to the same religion.

Olybrius married Tirrania Anicia Juliana, a member of the Anicia gens, whose father, Anicius Auchenius Bassus, was praefectus urbi of Rome in 382 and consul in 408. Olybrius and Juliana had a daughter, Anicia Faltonia Proba.

He reached the rank of vir clarissimus, then consularis of Campania (before 361 he is attested as patron of Formia), proconsul of Africa Province (361), praefectus urbi of Rome (369-370), Praetorian prefect of Illyricum, Praetorian prefect of the East, and consul in 379. He died between 384 and 395.

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