Diocletian believed that Romanus of Caesarea was arrogant, and he left the city for Nicomedia in the winter, accompanied by Galerius.

The death of Galerius in May 311 and Constantine's spectacular victory over Maxentius at the Milvian Bridge on October 28, 312, left only three Emperors: in the East, Maximinus Daia and Licinius ; in the West, Constantine.

Since it was Galerius's army that would have been purged — Diocletian had left his in Egypt to quell continuing unrest — Antiochenes would understandably have believed Galerius to be its instigator.

The boldness of this Christian displeased Diocletian, and he left the city and made for Nicomedia to spend the winter, accompanied by Galerius.

Detail of Galerius attacking Narseh on the Arch and Tomb of Galerius # Arch of Galerius | Arch of Galerius at Thessaloniki, Greece, the city where Galerius carried out most of his administrative actions

Rumors alleging that Diocletian's death was merely being kept secret until Galerius could come to assume power spread through the city.

Galerius arrived in the city later in March.

The 4th century AD Arch of Galerius and Rotunda | Rotunda of Galerius, one of several Roman monuments in the city and a UNESCO World Heritage Site.

In 295, emperor Galerius was defeated outside the city.

Galerius himself marched on Rome in the autumn, but failed to take the city.

The city subsequently expanded for a century and a half, it became a significant political and economical centre, moreso — it became one of the first Roman cities where Christianity was recognized as an official religion ( Еmperor Galerius ).

It was expected that Maxentius would try the same strategy as against Severus and Galerius earlier ; that is, remaining in the well-defended city of Rome, and sit out a siege which would cost his enemy much more.

The Arch of Galerius ( Gr.: αψίδα &# 32 ; του &# 32 ; Γαλερίου )( or Kamara, Gr.: καμάρα ) and the Rotunda ( ροτόντα ) are neighboring early 4th-century monuments in the city of Thessaloniki, in the region of Central Macedonia in northern Greece.

At the crux of the major axes of the city, the Arch of Galerius emphasized the power of the emperor and linked the monumental structures with the fabric of 4th-century Thessaloniki.

These rooms display architectural members from an Ionic temple of the 6 < SUP > th </ SUP > century bc, sculptures of all periods from Macedonia, exhibits from the excavations in the palace complex built by Galerius in Thessaloniki city centre, a reconstruction of the facade of the Macedonian tomb in Ayia Paraskevi, Thessaloniki prefecture, with genuine architectural members, and finds ( mainly gold artefacts ) of the Archaic and Classical periods from the Sindos cemetery.

Dioclesian begat Galerius, Galerius begat Constantine the Great the son of Helen, Constantine begat Con-stantius, Constantius begat Maximianus, with whom the British soldiers went from Britain, and he slew Gratian the Roman emperor, and held the government of all Europe ; and he did not dismiss the soldiers, which he brought with him from Britain to return to their country on account of their bravery, but gave them many provinces and countries, that is from the pool which is on the top of the mountain of Jupiter to the city named Cantguic, and until the western mound that is Cruc Ochideint ; and from those soldiers arose a nation which is called Lettau. 1 Maximianus therefore begat Owain, Owain begat Nor, Nor begat Solor, Solor begat Glywys, Glywys begat Gwynlliw, Gwynlliw begat the most blessed Cadoc of whom we are speaking.

In the spring of 293, in either Philippopolis ( Plovdiv, Bulgaria ) or Sirmium, Diocletian would do the same for Galerius, husband to Diocletian's daughter Valeria, and perhaps Diocletian's praetorian prefect.

Galerius was assigned Syria, Palestine, Egypt, and responsibility for the eastern borderlands.

In a public ceremony at Antioch, the official version of events was clear: Galerius was responsible for the defeat ; Diocletian was not.

Diocletian publicly humiliated Galerius, forcing him to walk for a mile at the head of the Imperial caravan, still clad in the purple robes of the Emperor.

Narseh sent an ambassador to Galerius to plead for the return of his wives and children in the course of the war, but Galerius had dismissed him.

Diocletian was conservative in matters of religion, a man faithful to the traditional Roman pantheon and understanding of demands for religious purification, but Eusebius, Lactantius and Constantine state that it was Galerius, not Diocletian, who was the prime supporter of the purge, and its greatest beneficiary.

Diocletian argued that forbidding Christians from the bureaucracy and military would be sufficient to appease the gods, but Galerius pushed for extermination.

Afterward, the persecutions under Diocletian and Galerius directed his attention to the martyrs of his own time and the past, and this led him to the history of the whole Church and finally to the history of the world, which, to him, was only a preparation for ecclesiastical history.

After suffering a defeat by the Persians in 296, Galerius crushed Narseh in 298 — reversing a series of Roman defeats throughout the century — capturing members of the imperial household and a substantial amount of booty and gaining a highly favourable peace treaty, which secured peace between the two powers for a generation.

The first book sketches briefly the history of the early Roman emperors from Augustus to Diocletian ( 305 ); the second, third and fourth deal more fully with the period from the accession of Constantius Chlorus and Galerius to the death of Theodosius I ; the fifth and sixth, the most useful for historians, cover the period between 395 and 410, when Priscus Attalus was deposed ; for this period, he is the most important surviving non-ecclesiastical source.

* Peace of Nisibis: Galerius signs a treaty with the Persian king Narseh that will last for 40 years.

* Galerius makes preparations in Syria for a campaign against the Persian king Narseh.

Diocletian may or may not have been present at the battle, but would present himself soon afterwards at Antioch, where the official version of events was made clear: Galerius was to take all the blame for the affair.

Their marriage was the occasion for the jointly-issued " Edict of Milan " that reissued Galerius ' previous edict allowing Christianity to be professed in the Empire, with additional dispositions that restored confiscated properties to Christian congregations and exempted Christian clergy from municipal civic duties. The redaction of the edict as reproduced by Lactantius-who follows the text affixed by Licinius in Nicomedia on June 14 313, after Maximinus ' defeat-uses a neutral language, expressing a will to propitiate " any Divinity whatsoever in the seat of the heavens ".

Maximinus has a bad name in Christian annals, as having renewed persecution after the publication of the toleration edict of Galerius ( see Edict of Toleration by Galerius ), acting outwardly as responding to the demands of various urban authorities asking for the expelling of Christians.

Some sources ( Lactantius, Epitome ) state that Galerius hated Maxentius and used his influence on Diocletian that Maxentius be ignored in the succession ; maybe Diocletianus also thought that he was not qualified for the military duties of the imperial office.

On his arrival at Antioch, Galerius was rebuked by Diocletian who disgraced him for his shameful defeat at the hands of Narses.

Artistic license was taken in the representations, for instance, the Caesar Galerius is shown in personal combat with the Sassanid Shah Narses in one of the panels ; although they never met in battle.

Porphyry is also known as an opponent of Christianity and defender of Paganism ; his defense of traditional religion, Philosophy from Oracles, written before the persecutions of Christians under Diocletian and Galerius, set out the basis for them:

* Marcus Galerius Aurelius Antoninus ( died before 138 ); his sepulchral inscription has been found at the Mausoleum of Hadrian in Rome.

* Galerius sends Severus II to suppress the rebellion in Rome.

It was expected that Maxentius would remain within Rome and endure a siege, as he already had successfully employed this strategy during the invasions of Severus and Galerius.

Galerius reckoned that it would be not too difficult to quell the usurpation, and early in 307, the Augustus Severus marched on Rome with a large army.

The joint rule of Maxentius and Maximian in Rome was tested further when Galerius himself marched to Italy in the summer of 307 with an even larger army.

During Narses ' time, Rome was ruled by Diocletian and it was with Diocletian and his son-in-law Galerius that Narses

When Maxentius, the son of the retired emperor Maximian, revolted at Rome, Galerius sent Severus to suppress the rebellion.

Galerius lays siege to Rome.

* Marcus Galerius Aurelius Antoninus ( died before 138 ); his sepulchral inscription has been found at the Mausoleum of Hadrian in Rome.