The work is carried out under supervision of Anthemius, notable praetorian prefect of the East.

Two praetorian prefects were selected as regents over Theodosius, one being Anthemius and the other, Antiochus ; both took over as regent.

* Anthemius ( praetorian prefect )

The work was carried out in two phases, with the first phase erected during Theodosius ' minority under the direction of Anthemius, the praetorian prefect of the East, and was finished in 413 according to a law in the Codex Theodosianus.

His mother Lucina, born c. 400, descended from Flavius Philippus, Praetorian prefect of the East in 346, and was the daughter of the influential Flavius Anthemius, Praetorian prefect of the East ( 404 – 415 ) and Consul in 405.

In 471, the year in which Leo held his fourth consulate with the Praetorian prefect of Italy Caelius Aconius Probianus as colleague, the two emperors strengthened their bonds with a marriage between Anthemius ' son, Marcian, and Leo's daughter, Leontia ; Marcian was honoured with his second consulate the following year, this time chosen by the Eastern court.

* 467 – Anthemius is elevated to Emperor of the Western Roman Empire.

* 472 – After being besieged in Rome by his own generals, Western Roman Emperor Anthemius is captured in the Old St. Peter's Basilica and put to death.

* Anthemius marries Marcia Euphemia, daughter of Marcian, and is elevated to the rank of comes.

He is succeeded by his 7-year-old son, Theodosius II, who rules under the domination of his devout Christian sister Pulcheria and Anthemius, who acts as regent.

This demand is rejected and Anthemius forced the Huns back across the Danube.

* Anthemius is besieged in the part of Rome he controls until his troops desert him.

He had Olybrius followed by another envoy, bearing a letter for Anthemius which is said to have read ;

This hypothesis is further strengthened by the fact that Anthemius ' prestige misled the 6th century historian John Malalas to state that Marcian had actually designated Anthemius as Western Emperor after Avitus.

In October 456, in fact, the Western Emperor Avitus had been deposed ; it is probable that Marcian considered Anthemius as successor, but the Eastern Emperor died in January 457 before choosing his colleague.

Anthemius ' rule was characterised by a good diplomatic relationship with the Eastern Empire ; for example, Anthemius is the last Western Emperor to be recorded in an Eastern law.

Carmen 2 is a panegyric to the emperor Anthemius, part of Sidonius ' efforts to be appointed Urban Prefect of Rome ; several samples of occasional verse ; and nine books of Letters, about which W. B.

The most pointed example of this is the Suebian general Ricimer, who became a " Shadow Emperor " by deposing Avitus, installing and subsequently deposing ( and murdering ) Majorian, installing ( and possibly subsequently murdering ) Libius Severus, ruling the Empire himself during an eighteen-month interregnum, deposing and killing Anthemius, and installing Olybrius.

In 472 Olybrius was sent to Italy by the Eastern Emperor, Leo I the Thracian, ostensibly to mediate between Ricimer and the Western Emperor, Anthemius, whom Ricimer had trapped in a siege of Rome.

On 25 March 467, Leo I, with the consent of Ricimer, designated Anthemius Western Emperor as Caesar and sent him to Italy with an army led by the Magister militum per Illyricum Marcellinus.

By choosing Anthemius, Leo obtained three results: he sent a possible candidate to the Eastern throne far away ; he repulsed Gaiseric's attempt to put a puppet of his on the Western throne ; and he put a capable and proven general with a trained army in Italy, ready to fight the Vandals.

The Eastern Roman Emperor, Leo I, sent Olybrius to mediate between Ricimer and Anthemius but, according to John Malalas, had sent a secret letter to Anthemius, urging him to kill Olybrius.

Anthemius sent his son over the Alps, with an army, to request the Visigoths to return Narbo to Roman control.

A second naval expedition against the Vandals, sent by Emperors Leo I and Anthemius, was defeated in 468.

Anthemius assumes a property of an ellipse not found in Apollonius's work, that the equality of the angles subtended at a focus by two tangents drawn from a point, and having given the focus and a double ordinate he goes on to use the focus and directrix to obtain any number of points on a parabola — the first instance on record of the practical use of the directrix.

Isidore of Miletus and Anthemius of Tralles originally planned on a main hall of the Hagia Sophia that measured 230 feet by 250 feet, making it the largest church in Constantinople, but the original dome was nearly 20 feet lower than it was constructed, “ Justinian suppressed these riots and took the opportunity of marking his victory by erecting in 532-7 the new Hagia Sophia, one of the largest, most lavish, and most expensive buildings of all time .” Although Isidore of Miletus and Anthemius of Tralles were not formally educated in architecture, they were scientists that could organize the logistics of drawing thousands of laborers and unprecedented loads of rare raw materials from around the Roman Empire to create the Hagia Sophia for Emperor Justinian I.

A few days after the death of Anthemius, Ricimer also died, on August 9 or 19 ; his nephew Gundobad Magister militum was elevated in his place.

As Aspar could not sit on the throne because of his barbaric origin, he opposed Anthemius whose prestige would have made him independent and chose a low-ranking military officer, Leo ; in the West, as his barbaric origin barred Ricimer from the throne, it was Majorian who received the purple.

Anthemius stayed in service under the new Emperor ; as magister militum, his task was to defend the Empire from the barbaric populations pressing on its border.

The following year the two consuls were Anthemius ' son, Marcian, and Leo's son-in-law, Flavius Zeno ( later successor of Leo on the Eastern throne ).

Anthemius lost his allies and, with the imperial treasury almost emptied by the failed operation, renounced taking Africa back and concentrated on the second problem of his Empire, keeping under his control the Western provinces that were the target of Visigoth expansion.

In order to obtain the support of the senatorial aristocracy, Anthemius conferred the rank of patricius on members of the Italian and Gallic governing class.

Sidonius had come to Rome to bring a petition from his people ; his contact in the court, Consul Caecina Decius Basilius, suggested that he should compose a panegyric to be performed at the beginning of Anthemius ' consulate, on January 1 468.

The new Emperor, however, had been chosen by the Eastern court, and, despite the bond of the marriage between Ricimer and Anthemius ' daughter, Alypia, they were not on good terms.

In the late Roman Empire, the Latin title comes, meaning ( imperial ) " companion ", denoted the high rank of various courtiers and provincial officials, either military or administrative: before Anthemius became emperor in the West in 467, he was military comes charged with strengthening defenses on the Danube frontier.

According to John of Antioch, Gundobad had previously executed the deposed emperor Anthemius on his uncle's orders.

After two years without a Western Emperor, the Eastern court nominated Anthemius, a successful general who had a strong claim on the Eastern throne.

In July 472 Anthemius was captured and executed ( on Ricimer's orders ) by the Burgundian prince Gundobad.

They were finally successful in 488, when Archbishop Anthemius guided by a dream discovered the tomb of Barnabas with the saint's body lying in a coffin and on his chest a copy of the Gospel of Matthew in Barnabas ' own writing.

Later on a granddaughter of Valentinian III was married to Olybrius and Anthemius was a son-in-law of Marcian.

The new church was designed and built by the architects Anthemius of Tralles and Isidorus of Miletus, and was consecrated on 28 June 550.