Petronius Maximus

Petronius Maximus
Emperor of the Western Roman Empire

Solidus of Emperor Petronius Maximus.
Reign 17 March – 31 May 455
Predecessor Valentinian III
Successor Avitus
Born c. 396
Died 31 May 455 (aged 58-59)
Issue Palladius
Full name
Flavius Anicius Petronius Maximus
Dynasty Anicii
Father possibly Anicius Probinus

Petronius Maximus[1] (Latin: Flavius Anicius Petronius Maximus Augustus)[2] (c. 396 – 31 May 455[3][4]) was Western Roman Emperor for two and a half months in 455. A wealthy senator and a prominent aristocrat, he was instrumental in the murders of the Western Roman magister militum, Flavius Aëtius, and the Western Roman Emperor Valentinian III. Maximus was killed during the events culminating in the sack of Rome by the Vandals in 455.

Early career

Petronius Maximus was born in about 396.[3] Although he was of obscure origin, it is now believed that he belonged to the Anicii family.[5] Related to later Emperor Olybrius, Maximus was the son of Anicius Probinus,[6] the son of Anicia Faltonia Proba and Sextus Claudius Petronius Probus,[7] who was Prefect of Illyricum in 364, Prefect of Gaul in 366, Prefect of Italy in 368–375 and again in 383 and consul in 371.

Maximus achieved a remarkable career early in life. His earliest known office was praetor, held about 411;[8] around 415 he served as a tribunus et notarius, which was an entry position to the imperial bureaucracy and led to his serving as Comes sacrarum largitionum (Count of the Sacred Largess) between 416 and 419.[8]

From January/February 420 to August/September 421 he was praefectus urbi of Rome, an office he held again sometime before 439; as praefectus he restored the Old St. Peter's Basilica. He was also appointed praetorian prefect sometime between 421 and 439; it was either while holding this post or during his second urban prefecture that he was appointed consul for the year 433.[9]

From August 439 to February 441 he held the praetorian prefecture of Italy,[10] then a second consulship in 443. Between 443 (the year of his fourth prefecture and second consulship) and 445 (the year he was granted the title of Patrician) Maximus built a forum in Rome, on the Caelian Hill between via Labicana and the Basilica di San Clemente.[9] During this year, he was briefly the most honored of all non-Imperial Romans, until the third consulate of Flavius Aëtius, generalissimo of the Western empire, the following year.[8]

The enmity between Petronius Maximus and the powerful Patricius and magister militum of the West Aëtius clearly led to the events that gradually brought down the Western Roman Empire.[11] Initially however, the principal beneficiary of this was Maximus, who came to the throne as a result of the murders of Aëtius in 454 and of the Western Roman Emperor Valentinian III on 16 March 455.[8]

Murder of Valentinian III and accession of Maximus

According to the historian John of Antioch,[12] Maximus poisoned the mind of the Emperor against Aëtius, resulting in the murder of his rival at the hands of Valentinian III. John’s account has it that Valentinian and Maximus placed a wager on a game that Maximus ended up losing.[8] As he did not have the money available, Maximus left his ring as a guarantee of his debt. Valentinian then used the ring to summon to court Lucina, the chaste and beautiful wife of Maximus, whom Valentinian had long lusted after. Lucina went to the court, believing she had been summoned by her husband, but instead found herself at dinner with Valentinian. Although initially resisting his advances, the Emperor managed to wear her down and succeeded in raping her.[8]

Returning home and meeting Maximus, she accused him of betrayal, believing that he had handed her over to the Emperor. Although Maximus swore revenge, he was equally motivated by ambition to supplant "a detested and despicable rival,"[13] so he decided to move against Valentinian.

According to John of Antioch, Maximus was acutely aware that while Aëtius was alive he could not exact vengeance on Valentinian, so Aëtius had to be removed.[8] He therefore allied himself with a eunuch of Valentinian's, the primicerius sacri cubiculi Heraclius, who had long opposed the general with the hope of exercising more power over the emperor. The two of them convinced Valentinian that Aëtius was planning to assassinate him and urged him to kill his magister militum during a meeting, which Valentinian did with his own hands, with the help of Heraclius, on September 21, 454.[8][14][15]

Once Aëtius was dead, Maximus asked Valentinian to be appointed in his place, but the Emperor refused;[16] Heraclius, in fact, had advised the Emperor not to allow anyone to possess the power that Aëtius had wielded. According to John of Antioch, Maximus was so irritated by Valentinian’s refusal to appoint him as his magister militum that he decided to have Valentinian assassinated as well. He chose as accomplices Optilia and Thraustila, two Scythians who had fought under the command of Aetius and who, after the death of their general, had been appointed as Valentinian’s escort.[8]

Maximus easily convinced them that Valentinian was the only one responsible for the death of Aetius, and that the two soldiers must avenge their old commander, while at the same time also promising them a reward for the betrayal of the Emperor. On March 16, 455 Valentinian, who was in Rome, went to Campus Martius with some guards, accompanied by Optilia, Thraustila and their men.[8] As soon as the Emperor dismounted to practice with the bow, Optilia came up with his men and hit him in the temple. As Valentinian turned to look at his attackers, Optilia killed him. At the same moment, Thraustila killed Heraclius. The two Scythians took the imperial diadem and robe and brought them to Maximus.[8]

The sudden and violent death of Valentinian III left the Western Roman Empire without an obvious successor to the throne, with several candidates supported by various groups of the imperial bureaucracy and the military. In particular, the army’s support was split between three main candidates:[8] Maximianus, the former domesticus ("bodyguard") of Aëtius, who was the son of an Egyptian merchant named Domninus who had become rich in Italy; the future emperor Majorian, who commanded the army after the death of Aetius and who had the backing of the Empress Licinia Eudoxia; and Maximus himself, who had the support of the Roman Senate and who in the end, on 17 March, defeated his rivals and secured the throne by distributing money to officials of the imperial palace.[8]

Reign and death

After gaining control of the palace, Maximus consolidated his hold on power by immediately marrying Licinia Eudoxia, the widow of Valentinian III.[16] She only married him reluctantly, suspecting that in fact he had been involved in the murder of her late husband; and indeed Maximus treated Valentinian III's assassins with considerable favor.[8] The eastern court at Constantinople refused to recognize his accession, so to further secure his position, Maximus quickly appointed Avitus as Magister militum, and sent him on a mission to Toulouse to gain the support of the Visigoths.[17][18] He also proceeded to cancel the betrothal of Licinia’s daughter, Eudocia, to Huneric, the son of the Vandal king Geiseric. This infuriated the Vandal king, who only needed the excuse of Licinia’s despairing appeal to the Vandal court for help to begin preparations for the invasion of Italy.[19]

By May, within two months of Maximus gaining the throne, news reached Rome that Geiseric was sailing for Italy. As the news spread, panic gripped the city and many of its inhabitants took to flight.[8] The Emperor, aware that Avitus had not yet returned with the expected Visigothic aid, decided that it was fruitless to mount a defense against the Vandals, so he attempted to organize his escape, urging the Senate to accompany him. However, in the panic, Petronius Maximus was completely abandoned by his bodyguard and entourage and left to fend for himself.[8]

As Maximus rode out of the city on his own on May 31, 455, he was set upon by an angry mob, which stoned him to death. (Another account has it that he was killed by "a certain Roman soldier named Ursus")[20] His body was mutilated and flung into the Tiber.[8][21] He had reigned for only seventy-eight days. His son from his first marriage, Palladius, who had held the title of Caesar between March 17 and May 31, and who had married his stepsister Eudocia, was probably executed.[8][22]

On June 2, 455, three days after Maximus’ death, Geiseric captured the city of Rome and thoroughly sacked it for two weeks. In response to the pleas of Pope Leo I, the Vandals desisted from more destructive behavior that often accompanied the sack of a city – arson, torture, and murder. Nevertheless, Geiseric eventually carried away a great amount of loot as well as the empress Licinia Eudoxia and her daughters Placidia and Eudocia.[23] Eudocia married Huneric in 456 as had been originally intended.


See also


  1. Jones & Martindale, pg. 749
  2. Drinkwater, pgs. 117-118
  3. 1 2 Drinkwater, pg. 118
  4. Norwich, J, pg. 162
  5. Drinkwater, pg. 117
  6. Drinkwater, pg. 120
  7. Drinkwater, pg. 112
  8. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Mathisen
  9. 1 2 Jones & Martindale, pg. 750
  10. Norwich, pg. 160
  11. Cameron, pg. 18
  12. John of Antioch, fragments 200–201; translated in C.D. Gordon, The Age of Attila: Fifth-Century Byzantium and the Barbarians (Ann Arbor, 1960), pp. 51ff
  13. Gibbons; chapter 35
  14. Cameron, pg. 473
  15. Canduci, pg. 160
  16. 1 2 Jones & Martindale, pg. 751
  17. Canduci, pg. 161-163
  18. Cameron, pg. 20
  19. Cameron, pg. 125
  20. Brown, p. 350
  21. Canduci, pg. 161
  22. Cameron, pg. 21
  23. Norwich, Byzantium: The Early Centuries, pg. 162

Media related to Petronius Maximus at Wikimedia Commons

Petronius Maximus
Born: 396 Died: 31 May 455
Regnal titles
Preceded by
Valentinian III
Western Roman Emperor
Succeeded by
Political offices
Preceded by
Flavius Aetius,
Flavius Valerius
Consul of the Roman Empire
with Imp. Caesar Flavius Theodosius Augustus XIV
Succeeded by
Flavius Ardaburius Asparus,
Flavius Areobindus
Preceded by
Flavius Dioscorus,
Flavius Eudoxius
Consul of the Roman Empire
with Flavius Paterius
Succeeded by
Imp. Caesar Flavius Theodosius Augustus XVIII,
Caecina Decius Aginatius Albinus
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