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PRAETORIAN GUARDS COMMANDER

The praetorian prefect was commander of the Praetorian Guard until Constantine abolished it in 314 . Praetorian prefects continued to be appointed until the reign of Heraclius , but the office developed into head of the civil and judicial administration of the empire.

Under the empire the praetorians or imperial guards were commanded by one, two, or even three praefects (praefecti praetorio), who were chosen by the emperor from among the knights and held office at his pleasure. From the time of Alexander Severus the post was open to senators also, and if a knight was appointed he was at the same time raised to the senate. Down to the time of Constantine, who deprived the office of its military character, the prefecture of the guards was regularly held by tried soldiers, often by men who had fought their way up from the ranks. In course of time the command seems to have been enlarged so as to include all the troops in Italy except the corps commanded by the city praefect (''cohortes urbanae'').

The special position of the Praetorians made them become a power in their own right in the Roman state, and their Prefect , ''praefectus praetorio'', soon became one of the more powerful men in this society. The emperors tried to flatter and control the praetorians, but they staged many Coup D'état s and contributed to a rapid rate of turnover in the imperial succession. The praetorians thus came to destabilize the Roman state, contrary to their purpose. The Praetorian prefect became a major administrative figure in the later empire, when the post combined in one individual the duties of an imperial chief of staff with direct command over the guard also. Diocletian greatly reduced the power of these prefects as part of his sweeping reform of the empire's administrative and military structures.


List of known Guard Prefects



































































































































































































































































































Known Prefects of the Praetorian Guard 2 BC - AD 312
''Name''

''Emperor Served''

Publius Aper

Augustus

Quintus Ostoriius Scapula

Augustus
Valerius Ligur

Augustus
Lucius Strabo

Augustus , Tiberius

Lucius Aelius Sejanus

Tiberius

Quintus Sutorius Macro

Tiberius , Caligula

Cassius Chaerea

Caligula
Rufrius Pollio

Claudius

Cantonius Justus

Claudius
Rufius Crispinus

Claudius
Lusius Geta

Claudius
Sextus Afranius Burrus

Claudius , Nero

Faenius Rufus

Nero
Gaius Ophonius Tigellinus

Nero
Nymphidius Sabinus

Nero
Cornelius Laco

Galba

Plotius Firmus

Otho
Licinius Proculus

Otho
Publius Sabinus

Vitellius

Junius Priscus

Vitellius
Tiberius Julius Alexander

Vespasian

Arrius Varus

Vespasian
Arrecinus Clemens

Vespasian
Titus Flavius Vespasianus

Vespasian
Cornelius Fuscus

Domitian

Casperius Aelianus

Domitian
Norbanus Domitian
Petronius Secundus Domitian
Casperius Aelianus Nerva

Suburanus Trajan

Claudius Livianus Trajan
S. Sulpicius Similis Trajan
C. Septicius Clarus Hadrian

Marcius Turbo Hadrian
Gaius Maximus

Hadrian , Antoninus Pius

Tattius Maximus

Antoninus Pius
Fabius Cornelius

Antoninus Pius
Furius Victorinus

Antoninus Pius , Marcus Aurelius

Macrinus Vindex

Marcus Aurelius
Bassaeus Rufus

Marcus Aurelius
Tarutenius Paternus

Marcus Aurelius , Commodus

Tigidius Perennis

Commodus
Cleander

Commodus
Lucius Julianus

Commodus
Aemilius Laetus

Commodus , Pertinax , Didius Julianus

Flavius Genialis

Didius Julianus
Tullius Crispinus

Didius Julianus
Veterius Macrinus

Septimius Severus

Gaius Fulvius Plautianus

Septimius Severus
Papinian

Septimius Severus , Caracalla

Marcus Opellius Macrinus

Caracalla
Ulpius Julianus

Macrinus

Julianus Nestor

Macrinus
Valerius Comazon Eutychchianus

Elagabalus

Antiochianus

Elagabalus
Ulpian

Severus Alexander

Iulius Paulus

Severus Alexander
P. Aelius Vitalianus

Maximinus

Philip The Arab

Gordian III

Gaius Julius Priscus

Philip The Arab

Aurelius Heraclianus

Gallienus

Florianus

Tacitus

Carus

Probus

Aper

Carus , Carinus , Numerian

Aristobulus

Numerian , Diocletian

Afranius Hannibalianus

Diocletian
Constantius Chlorus

Diocletian
Asclepiodotus

Diocletian
Rufius Volusianus

Maxentius

Publius Cornelius Anullinus

Maxentius



TRANSFORMATION TO ADMINISTRATOR

Further, the praetorian praefect acquired, in addition to his military functions, a criminal jurisdiction, which he exercised not as the delegate but as the representative of the emperor, and hence it was decreed by Constantine 331 that from the sentence of the praetorian praefect there should be no appeal. A similar jurisdiction in civil cases was acquired by him not later than the time of Severus . Hence a knowledge of law became a qualification for the post, which under Marcus Aurelius and Commodus , but especially from the time of Severus, was held by the first jurists of the age, (e.g. Papinian , Ulpian , Paullus ) and John The Cappadocian , while the military qualification fell more and more into the background. Under Constantine the institution of the Magister Militum deprived the praetorian prefecture altogether of its military character; but left it the highest civil office of the empire.