Life

Darius was a Praetorian prefect of the East. He is attested in office between August 28, 436, when the law preserved in Codex Theodosianus

Codex Theodosianus

The Codex Theodosianus was a compilation of the laws of the Roman Empire under the Christian emperors since 312. A commission was established by Theodosius II in 429 and the compilation was published in the eastern half of the Roman Empire in 438...

XI 1.37^a was addressed to him, to March 16, 437, the day in which another law, preserved in Codex Theodosianus

Codex Theodosianus

The Codex Theodosianus was a compilation of the laws of the Roman Empire under the Christian emperors since 312. A commission was established by Theodosius II in 429 and the compilation was published in the eastern half of the Roman Empire in 438...

VI 23.4^a, was addressed to him.

He might have been in office until October 437; in that case, he was in Constantinople and received a copy of the not-yet published Codex Theodosianus.

Darius is to be identified with the Praetorian prefect "Damarius", whose wife Aeliana had a vision in 425, in Constantinople.

Sources

• Arnold Hugh Martin Jones, John Robert Martindale, John Morris, "Darius 3", Prosopography of the Later Roman Empire
  Prosopography of the Later Roman Empire
  Prosopography of the Later Roman Empire is a set of three volumes collectively describing every person attested or claimed to have lived in the Roman world from AD 260, the date of the beginning of Gallienus' sole rule, to 641, the date of the death of Heraclius, which is commonly held to mark the...
  
  , Cambridge University Press, 1971, ISBN 0521201594, p. 348.