Constantine I

**Constantine the Great** (Latin: *Flavius Valerius Aurelius Constantinus Augustus*; Ancient Greek: Κωνσταντῖνος ὁ Μέγας, romanized: *Kōnstantînos ho Mégas*; 27 February c. 272 AD– 22 May 337 AD), also known as **Constantine I**, was a Roman Emperor who ruled between 306 and 337 AD. Born in Naissus, in Dacia Ripensis, city now known as Niš (Serbian Cyrillic: Ниш, located in Serbia), he was the son of Flavius Valerius Constantius, a Roman Army officer of Illyrian origins. His mother Helena was Greek. His father became *Caesar*, the deputy emperor in the west, in 293 AD. Constantine was sent east, where he rose through the ranks to become a military tribune under Emperors Diocletian and Galerius. In 305, Constantius was raised to the rank of *Augustus*, senior western emperor, and Constantine was recalled west to campaign under his father in Britannia (Britain). Constantine was acclaimed as emperor by the army at Eboracum (modern-day York) after his father's death in 306 AD. He emerged victorious in a series of civil wars against Emperors Maxentius and Licinius to become sole ruler of both west and east by 324 AD.As emperor, Constantine enacted administrative, financial, social, and military reforms to strengthen the empire. He restructured the government, separating civil and military authorities. To combat inflation he introduced the solidus, a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years. The Roman army was reorganised to consist of mobile field units and garrison soldiers capable of countering internal threats and barbarian invasions. Constantine pursued successful campaigns against the tribes on the Roman frontiers—the Franks, the Alamanni, the Goths, and the Sarmatians—even resettling territories abandoned by his predecessors during the Crisis of the Third Century.Constantine was the first Roman emperor to convert to Christianity.Although he lived much of his life as a pagan, and later as a catechumen, he joined the Christian faith on his deathbed, being baptised by Eusebius of Nicomedia. He played an influential role in the proclamation of the Edict of Milan in 313, which declared religious tolerance for Christianity in the Roman empire. He called the First Council of Nicaea in 325, which produced the statement of Christian belief known as the Nicene Creed.The Church of the Holy Sepulchre was built on his orders at the purported site of Jesus' tomb in Jerusalem and became the holiest place in Christendom. The Papal claim to temporal power in the High Middle Ages was based on the forged Donation of Constantine. He has historically been referred to as the "First Christian Emperor", and he did heavily promote the Christian Church. Some modern scholars, however, debate his beliefs and even his comprehension of the Christian faith itself.The age of Constantine marked a distinct epoch in the history of the Roman Empire.He built a new imperial residence at Byzantium and renamed the city Constantinople (now Istanbul) after himself (the laudatory epithet of "New Rome" came later, and was never an official title). It became the capital of the Empire for more than a thousand years, with the later eastern Roman Empire, now being referred to as the Byzantine Empire by historians. His more immediate political legacy was that he replaced Diocletian's tetrarchy with the principle of dynastic succession by leaving the empire to his sons. His reputation flourished during the lifetime of his children and for centuries after his reign. The medieval church upheld him as a paragon of virtue, while secular rulers invoked him as a prototype, a point of reference, and the symbol of imperial legitimacy and identity. Beginning with the Renaissance, there were more critical appraisals of his reign, due to the rediscovery of anti-Constantinian sources. Trends in modern and recent scholarship have attempted to balance the extremes of previous scholarship. He created the Constantinian Dynasty

## Early life

Flavius Valerius Constantinus, as he was originally named, was born in the city of Naissus, (today Niš, Serbia) part of the Dardania province of Moesia on 27 February, probably c. 272 AD.His father was Flavius Constantius, an Illyrian, and a native of Dardania province of Moesia (later Dacia Ripensis).Constantine probably spent little time with his father who was an officer in the Roman army, part of the Emperor Aurelian's imperial bodyguard. Being described as a tolerant and politically skilled man, Constantius advanced through the ranks, earning the governorship of Dalmatia from Emperor Diocletian, another of Aurelian's companions from Illyricum, in 284 or 285. Constantine's mother was Helena, a Greek woman of low social standing from Helenopolis of Bithynia. It is uncertain whether she was legally married to Constantius or merely his concubine. His main language was Latin, and during his public speeches he needed Greek translators. In July 285 AD, Diocletian declared Maximian, another colleague from Illyricum, his co-emperor. Each emperor would have his own court, his own military and administrative faculties, and each would rule with a separate praetorian prefect as chief lieutenant.Maximian ruled in the West, from his capitals at Mediolanum (Milan, Italy) or Augusta Treverorum (Trier, Germany), while Diocletian ruled in the East, from Nicomedia (İzmit, Turkey). The division was merely pragmatic: the empire was called "indivisible" in official panegyric, and both emperors could move freely throughout the empire. In 288, Maximian appointed Constantius to serve as his praetorian prefect in Gaul. Constantius left Helena to marry Maximian's stepdaughter Theodora in 288 or 289.Diocletian divided the Empire again in 293 AD, appointing two caesars (junior emperors) to rule over further subdivisions of East and West. Each would be subordinate to their respective augustus (senior emperor) but would act with supreme authority in his assigned lands. This system would later be called the Tetrarchy. Diocletian's first appointee for the office of caesar was Constantius; his second was Galerius, a native of Felix Romuliana. According to Lactantius, Galerius was a brutal, animalistic man. Although he shared the paganism of Rome's aristocracy, he seemed to them an alien figure, a semi-barbarian.In spite of meritocratic overtones, the Tetrarchy retained vestiges of hereditary privilege, and Constantine became the prime candidate for future appointment as caesar as soon as his father took the position. Constantine went to the court of Diocletian, where he lived as his father's heir presumptive.

### In the East

Constantine received a formal education at Diocletian's court where he learned Latin literature, Greek, and

philosophy.The cultural environment in Nicomedia was open, fluid, and socially mobile; in it, Constantine could mix with intellectuals both pagan and Christian. He may have attended the lectures of Lactantius, a Christian scholar of Latin in the city.Because Diocletian did not completely trust Constantius—none of the Tetrarchs fully trusted their colleagues—Constantine was held as something of a hostage, a tool to ensure Constantius' best behavior. Constantine was nonetheless a prominent member of the court: he fought for Diocletian and Galerius in Asia and served in a variety of tribunates; he campaigned against barbarians on the Danube in 296 AD and fought the Persians under Diocletian in Syria (297 AD), as well as under Galerius in Mesopotamia (298–299 AD).By late 305 AD, he had become a tribune of the first order, a *tribunus ordinis primi*. Constantine had returned to Nicomedia from the eastern front by the spring of 303 AD, in time to witness the beginnings of Diocletian's "Great Persecution", the most severe persecution of Christians in Roman history.In late 302, Diocletian and Galerius sent a messenger to the oracle of Apollo at Didyma with an inquiry about Christians. On 23 February 303 AD, Diocletian ordered the destruction of Nicomedia's new church, condemned its scriptures to the flames, and had its treasures seized. In the months that followed, churches and scriptures were destroyed, Christians were deprived of official ranks, and priests were imprisoned. It is unlikely that Constantine played any role in the persecution. In his later writings, he would attempt to present himself as an opponent of Diocletian's "sanguinary edicts" against the "worshippers of God", but nothing indicates that he opposed it effectively at the time.Although no contemporary Christian challenged Constantine for his inaction during the persecutions, it remained a political liability throughout his life.On 1 May 305 AD, Diocletian, as a result of a debilitating sickness taken in the winter of 304–305 AD, announced his resignation. In a parallel ceremony in Milan, Maximian did the same. Lactantius states that Galerius manipulated the weakened Diocletian into resigning, and forced him to accept Galerius' allies in the imperial succession. According to Lactantius, the crowd listening to Diocletian's resignation speech believed, until the very last moment, that Diocletian would choose Constantine and Maxentius (Maximian's son) as his successors.It was not to be: Constantius and Galerius were promoted to *augusti*, while Severus and Maximinus Daia, Galerius' nephew, were appointed their caesars respectively. Constantine and Maxentius were ignored. Some of the ancient sources detail plots that Galerius made on Constantine's life in the months following Diocletian's abdication. They assert that Galerius assigned Constantine to lead an advance unit in a cavalry charge through a swamp on the middle Danube, made him enter into single combat with a lion, and attempted to kill him in hunts and wars. Constantine always emerged victorious: the lion emerged from the contest in a poorer condition than Constantine; Constantine returned to Nicomedia from the Danube with a Sarmatian captive to drop at Galerius' feet.It is uncertain how much these tales can be trusted.It is uncertain how much these tales can be trusted.

### In the West

Constantine recognized the implicit danger in remaining at Galerius' court, where he was held as a virtual hostage. His career depended on being rescued by his father in the west. Constantius was quick to intervene.In the late spring or early summer of 305 AD, Constantius requested leave for his son to help him campaign in Britain. After a long evening of drinking, Galerius granted the request. Constantine's later propaganda describes how he fled the court in the night, before Galerius could change his mind. He rode from post-house to post-house at high speed, hamstringing every horse in his wake.By the time Galerius awoke the following morning, Constantine had fled too far to be caught.Constantine joined his father in Gaul, at Bononia (Boulogne) before the summer of 305 AD.From Bononia, they crossed the Channel to Britain and made their way to Eboracum (York), capital of the province of Britannia Secunda and home to a large military base. Constantine was able to spend a year in northern Britain at his father's side, campaigning against the Picts beyond Hadrian's Wall in the summer and autumn.Constantius' campaign, like that of Septimius Severus before it, probably advanced far into the north without achieving great success.Constantius had become severely sick over the course of his reign, and died on 25 July 306 in Eboracum. Before dying, he declared his support for raising Constantine to the rank of full augustus. The Alamannic king Chrocus, a barbarian taken into service under Constantius, then proclaimed Constantine as augustus. The troops loyal to Constantius' memory followed him in acclamation. Gaul and Britain quickly accepted his rule;Hispania, which had been in his father's domain for less than a year, rejected it.Constantine sent Galerius an official notice of Constantius' death and his own acclamation. Along with the notice, he included a portrait of himself in the robes of an augustus.The portrait was wreathed in bay. He requested recognition as heir to his father's throne, and passed off responsibility for his unlawful ascension on his army, claiming they had "forced it upon him".Galerius was put into a fury by the message; he almost set the portrait on fire. His advisers calmed him, and argued that outright denial of Constantine's claims would mean certain war.Galerius was compelled to compromise: he granted Constantine the title "caesar" rather than "augustus" (the latter office went to Severus instead).Wishing to make it clear that he alone gave Constantine legitimacy, Galerius personally sent Constantine the emperor's traditional purple robes. Constantine accepted the decision, knowing that it would remove doubts as to his legitimacy.

## Early rule

Constantine's share of the Empire consisted of Britain, Gaul, and Spain, and he commanded one of the largest Roman armies which was stationed along the important Rhine frontier.He remained in Britain after his promotion to emperor, driving back the tribes of the Picts and securing his control in the northwestern dioceses. He completed the reconstruction of military bases begun under his father's rule, and he ordered the repair of the region's roadways.He then left for Augusta Treverorum (Trier) in Gaul, the Tetrarchic capital of the northwestern Roman Empire.The Franks learned of Constantine's acclamation and invaded Gaul across the lower Rhine over the winter of 306–307 AD.He drove them back beyond the Rhine and captured Kings Ascaric and Merogais; the kings and their soldiers were fed to the beasts of Trier's amphitheatre in the *adventus* (arrival) celebrations which followed.He drove them back beyond the Rhine and captured Kings Ascaric and Merogais; the kings and their soldiers were fed to the beasts of Trier's amphitheatre in the *adventus* (arrival) celebrations which followed.Constantine began a major expansion of Trier. He strengthened the circuit wall around the city with military towers and fortified gates, and he began building a palace complex in the northeastern part of the city. To the south of his palace, he ordered the construction of a large formal audience hall and a massive imperial bathhouse. He sponsored many building projects throughout Gaul during his tenure as emperor of the West, especially in Augustodunum (Autun) and Arelate (Arles).According to Lactantius, Constantine followed a tolerant policy towards Christianity, although he was not yet a Christian himself. He probably judged it a more sensible policy than open persecution and a way to distinguish himself from the "great persecutor" Galerius. He decreed a formal end to persecution and returned to Christians all that they had lost during them.Constantine was largely untried and had a hint of illegitimacy about him; he relied on his father's reputation in his early propaganda, which gave as much coverage to his father's deeds as to his. His military skill and building projects, however, soon gave the panegyrist the opportunity to comment favourably on the similarities between father and son, and Eusebius remarked that Constantine was a "renewal, as it were, in his own person, of his father's life and reign".Constantinian coinage, sculpture, and oratory also show a new tendency for disdain towards the "barbarians" beyond the frontiers. He minted a coin issue after his victory over the Alemanni which depicts weeping and begging Alemannic tribesmen, "the Alemanni conquered" beneath the phrase "Romans' rejoicing".There was little sympathy for these enemies; as his panegyrist declared, "It is a stupid clemency that spares the conquered foe."

### Maxentius' rebellion

Following Galerius' recognition of Constantine as caesar, Constantine's portrait was brought to Rome, as was customary. Maxentius mocked the portrait's subject as the son of a harlot and lamented his own powerlessness. Maxentius, envious of Constantine's authority,seized the title of emperor on 28 October 306 AD. Galerius refused to recognize him but failed to unseat him. Galerius sent Severus against Maxentius, but during the campaign, Severus' armies, previously under command of Maxentius' father Maximian, defected, and Severus was seized and imprisoned.Constantine remained aloof from the Italian conflict, however. Over the spring and summer of 307 AD, he had left Gaul for Britain to avoid any involvement in the Italian turmoil; now, instead of giving Maxentius military aid, he sent his troops against Germanic tribes along the Rhine. In 308 AD, he raided the territory of the Bructeri, and made a bridge across the Rhine at Colonia Agrippinensium (Cologne). In 310 AD, he marched to the northern Rhine and fought the Franks. When not campaigning, he toured his lands advertising his benevolence and supporting the economy and the arts. His refusal to participate in the war increased his popularity among his people and strengthened his power base in the West. Maximian returned to Rome in the winter of 307–308 AD, but soon fell out with his son. In early 308 AD, after a failed attempt to usurp Maxentius' title, Maximian returned to Constantine's court.On 11 November 308 AD, Galerius called a general council at the military city of Carnuntum (Petronell-Carnuntum, Austria) to resolve the instability in the western provinces. In attendance were Diocletian, briefly returned from retirement, Galerius, and Maximian. Maximian was forced to abdicate again and Constantine was again demoted to caesar. Licinius, one of Galerius' old military companions, was appointed augustus in the western regions. The new system did not last long: Constantine refused to accept the demotion and continued to style himself as augustus on his coinage, even as other members of the Tetrarchy referred to him as a caesar on theirs. Maximinus Daia was frustrated that he had been passed over for promotion while the newcomer Licinius had been raised to the office of augustus and demanded that Galerius promote him. Galerius offered to call both Maximinus and Constantine "sons of the augusti". but neither accepted the new title. By the spring of 310 AD, Galerius was referring to both men as augusti.

### Maximian's rebellion

In 310 AD, a dispossessed Maximian rebelled against Constantine while Constantine was away campaigning against the Franks. Maximian had been sent south to Arles with a contingent of Constantine's army, in preparation for any attacks by Maxentius in southern Gaul. He announced that Constantine was dead, and took up the imperial purple. In spite of a large donative pledge to any who would support him as emperor, most of Constantine's army remained loyal to their emperor, and Maximian was soon compelled to leave. Constantine soon heard of the rebellion, abandoned his campaign against the Franks, and marched his army up the Rhine. At Cabillunum (Chalon-sur-Saône), he moved his troops onto waiting boats to row down the slow waters of the Saône to the quicker waters of the Rhone. He disembarked at Lugdunum (Lyon).

Maximian fled to Massilia (Marseille), a town better able to withstand a long siege than Arles. It made little difference, however, as loyal citizens opened the rear gates to Constantine. Maximian was captured and reproved for his crimes. Constantine granted some clemency, but strongly encouraged his suicide. In July 310 AD, Maximian hanged himself.In spite of the earlier rupture in their relations, Maxentius was eager to present himself as his father's devoted son after his death.He began minting coins with his father's deified image, proclaiming his desire to avenge Maximian's death. Constantine initially presented the suicide as an unfortunate family tragedy. By 311 AD, however, he was spreading another version. According to this, after Constantine had pardoned him, Maximian planned to murder Constantine in his sleep. Fausta learned of the plot and warned Constantine, who put a eunuch in his own place in bed. Maximian was apprehended when he killed the eunuch and was offered suicide, which he accepted. Along with using propaganda, Constantine instituted a *damnatio memoriae* on Maximian, destroying all inscriptions referring to him and eliminating any public work bearing his image.The death of Maximian required a shift in Constantine's public image. He could no longer rely on his connection to the elder Emperor Maximian, and needed a new source of legitimacy. In a speech delivered in Gaul on 25 July 310 AD, the anonymous orator reveals a previously unknown dynastic connection to Claudius II, a 3rd-century emperor famed for defeating the Goths and restoring order to the empire. Breaking away from tetrarchic models, the speech emphasizes Constantine's ancestral prerogative to rule, rather than principles of imperial equality. The new ideology expressed in the speech made Galerius and Maximian irrelevant to Constantine's right to rule.Indeed, the orator emphasizes ancestry to the exclusion of all other factors: "No chance agreement of men, nor some unexpected consequence of favor, made you emperor," the orator declares to Constantine.The oration also moves away from the religious ideology of the Tetrarchy, with its focus on twin dynasties of Jupiter and Hercules. Instead, the orator proclaims that Constantine experienced a divine vision of Apollo and Victory granting him laurel wreaths of health and a long reign. In the likeness of Apollo, Constantine recognized himself as the saving figure to whom would be granted "rule of the whole world", as the poet Virgil had once foretold. The oration's religious shift is paralleled by a similar shift in Constantine's coinage. In his early reign, the coinage of Constantine advertised Mars as his patron. From 310 AD on, Mars was replaced by Sol Invictus, a god conventionally identified with Apollo. There is little reason to believe that either the dynastic connection or the divine vision are anything other than fiction, but their proclamation strengthened Constantine's claims to legitimacy and increased his popularity among the citizens of Gaul.

## Civil wars

### War against Maxentius

By the middle of 310 Galerius had become too ill to involve himself in imperial politics.His final act survives: a letter to the provincials posted in Nicomedia on 30 April 311, proclaiming an end to the persecutions of Christians, and the resumption of religious toleration. He died soon after the edict's proclamation, destroying what little stability remained in the tetrarchy. Maximinus mobilized against Licinius, and seized Asia Minor. A hasty peace was signed on a boat in the middle of the Bosphorus.While Constantine toured Britain and Gaul, Maxentius prepared for war.He fortified northern Italy, and strengthened his support in the Christian community by allowing it to elect a new Bishop of Rome, Eusebius. Maxentius' rule was nevertheless insecure. His early support dissolved in the wake of heightened tax rates and depressed trade; riots broke out in Rome and Carthage;and Domitius Alexander was able to briefly usurp his authority in Africa. By 312, he was a man barely tolerated, not one actively supported, even among Christian Italians. In the summer of 311, Maxentius mobilized against Constantine while Licinius was occupied with affairs in the East. He declared war on Constantine, vowing to avenge his father's death. To prevent Maxentius from forming an alliance against him with Licinius, Constantine forged his own alliance with Licinius over the winter of 311–12, and offered him his sister Constantia in marriage. Maximinus considered Constantine's arrangement with Licinius an affront to his authority. In response, he sent ambassadors to Rome, offering political recognition to Maxentius in exchange for a military support. Maxentius accepted. According to Eusebius, inter-regional travel became impossible, and there was military buildup everywhere. There was "not a place where people were not expecting the onset of hostilities every day". Constantine's advisers and generals cautioned against preemptive attack on Maxentius; even his soothsayers recommended against it, stating that the sacrifices had produced unfavorable omens. Constantine, with a spirit that left a deep impression on his followers, inspiring some to believe that he had some form of supernatural guidance, ignored all these cautions. Early in the spring of 312, Constantine crossed the Cottian Alps with a quarter of his army, a force numbering about 40,000. The first town his army encountered was Segusium (Susa, Italy), a heavily fortified town that shut its gates to him. Constantine ordered his men to set fire to its gates and scale its walls. He took the town quickly. Constantine ordered his troops not to loot the town, and advanced with them into northern Italy.At the approach to the west of the important city of Augusta Taurinorum (Turin, Italy), Constantine encountered a large force of heavily armed Maxentian cavalry.In the ensuing battle Constantine's army encircled Maxentius' cavalry, flanked them with his own cavalry, and dismounted them with blows from his soldiers' iron-tipped clubs. Constantine's armies emerged victorious. Turin refused to give refuge to Maxentius' retreating forces, opening its gates to Constantine instead. Other cities of the north Italian plain sent Constantine embassies of congratulation for his victory. He moved on to Milan, where he was met with open gates and jubilant rejoicing. Constantine rested his army in Milan until mid-summer 312, when he moved on to Brixia (Brescia).

## Later rule

### Foundation of Constantinople

Licinius' defeat came to represent the defeat of a rival centre of pagan and Greek-speaking political activity in the East, as opposed to the Christian and Latin-speaking Rome, and it was proposed that a new Eastern capital should represent the integration of the East into the Roman Empire as a whole, as a center of learning, prosperity, and cultural preservation for the whole of the Eastern Roman Empire.Among the various locations proposed for this alternative capital, Constantine appears to have toyed earlier with Serdica (present-day Sofia), as he was reported saying that "*Serdica is my Rome*".Sirmium and Thessalonica were also considered.Sirmium and Thessalonica were also considered.Eventually, however, Constantine decided to work on the Greek city of Byzantium, which offered the advantage of having already been extensively rebuilt on Roman patterns of urbanism, during the preceding century, by Septimius Severus and Caracalla, who had already acknowledged its strategic importance.The city was thus founded in 324, dedicated on 11 May 330[212] and renamed *Constantinopolis* ("Constantine's City" or Constantinople in English). Special commemorative coins were issued in 330 to honor the event. The new city was protected by the relics of the True Cross, the Rod of Moses and other holy relics, though a cameo now at the Hermitage Museum also represented Constantine crowned by the tyche of the new city. The figures of old gods were either replaced or assimilated into a framework of Christian symbolism. Constantine built the new Church of the Holy Apostles on the site of a temple to Aphrodite. Generations later there was the story that a divine vision led Constantine to this spot, and an angel no one else could see led him on a circuit of the new walls. The capital would often be compared to the 'old' Rome as *Nova Roma Constantinopolitana*, the "New Rome of Constantinople".

### Religious policy

Constantine was the first emperor to stop the persecution of Christians and to legalize Christianity, along with all other religions/cults in the Roman Empire. In February 313, he met with Licinius in Milan and developed the Edict of Milan, which stated that Christians should be allowed to follow their faith without oppression.This removed penalties for professing Christianity, under which many had been martyred previously, and it returned confiscated Church property. The edict protected all religions from persecution, not only Christianity, allowing anyone to worship any deity that they chose. A similar edict had been issued in 311 by Galerius, senior emperor of the Tetrarchy, which granted Christians the right to practise their religion but did not restore any property to them.The Edict of Milan included several clauses which stated that all confiscated churches would be returned, as well as other provisions for previously persecuted Christians. Scholars debate whether Constantine adopted his mother Helena's Christianity in his youth, or whether he adopted it gradually over the course of his life.Constantine possibly retained the title of *pontifex maximus* which emperors bore as heads of the ancient Roman religion until Gratian renounced the title.According to Christian writers, Constantine was over 40 when he finally declared himself a Christian, making it clear that he owed his successes to the protection of the Christian High God alone.Despite these declarations of being a Christian, he waited to be baptized on his deathbed, believing that the baptism would release him of any sins he committed in the course of carrying out his policies while emperor. He supported the Church financially, built basilicas, granted privileges to clergy (such as exemption from certain taxes), promoted Christians to high office, and returned property confiscated during the long period of persecution.His most famous building projects include the Church of the Holy Sepulchre and Old Saint Peter's Basilica. In constructing the Old Saint Peter's Basilica, Constantine went to great lengths to erect the basilica on top of St. Peter's resting place, so much so that it even affected the design of the basilica, including the challenge of erecting it on the hill where St. Peter rested, making its complete construction time over 30 years from the date Constantine ordered it to be built. Constantine might not have patronized Christianity alone. He built a triumphal arch in 315 to celebrate his victory in the Battle of the Milvian Bridge (312) which was decorated with images of the goddess Victoria, and sacrifices were made to pagan gods at its dedication, including Apollo, Diana, and Hercules. Absent from the Arch are any depictions of Christian symbolism. However, the Arch was commissioned by the Senate, so the absence of Christian symbols may reflect the role of the Curia at the time as a pagan redoubt.

## References

1. ↑ Norwich, John Julius (1996). *Byzantium* (First American ed.). New York. pp. 54–57. ISBN . OCLC 18164817.
2. ↑ Constantine was not baptised until just before his death.
3. ↑ Gregory, *A History of Byzantium*, 49
4. ↑ Van Dam, *Remembering Constantine at the Milvian Bridge*, 30.
5. ↑ Barnes, *Constantine and Eusebius*, 3, 39–42; Elliott, *Christianity of Constantine*, 17; Odahl, 15; Pohlsander, "Constantine I"; Southern, 169, 341.
6. ↑ 6.0 6.1 Barnes, *Constantine and Eusebius*, 3; Barnes, *New Empire*, 39–42; Elliott, "Constantine's Conversion," 425–6; Elliott, "Eusebian Frauds," 163; Elliott, *Christianity of Constantine*, 17; Jones, 13–14; Lenski, "Reign of Constantine" (CC), 59; Odahl, 16; Pohlsander, *Emperor Constantine*, 14; Rodgers, 238; Wright, 495, 507.
7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Barnes, *Constantine and Eusebius*, 3; Lenski, "Reign of Constantine" (CC), 59–60; Odahl, 16–17.
8. ↑ 8.0 8.1 Barnes, *Constantine and Eusebius*, p. 8–14; Corcoran, "Before Constantine" (CC), 41–54; Odahl, 46–50; Treadgold, 14–15.
9. ↑ Bowman, p. 70; Potter, 283; Williams, 49, 65.
10. ↑ Barnes, *Constantine and Eusebius*, 3; Elliott, *Christianity of Constantine*, 20; Lenski, "Reign of Constantine" (CC), 59–60; Odahl, 47, 299; Pohlsander, *Emperor Constantine*, 14.
11. ↑ Lactantius, *De Mortibus Persecutorum* 7.1; Barnes, *Constantine and Eusebius*, 13, 290.
12. ↑ Barnes, *Constantine and Eusebius*, 8–9; Corcoran, "Before Constantine" (CC), 42–43, 54.
13. ↑ 13.0 13.1 Barnes, *Constantine and Eusebius*, 3; Lenski, "Reign of Constantine" (CC), 59–60; Odahl, 56–7.
14. ↑ 14.0 14.1 Barnes, *Constantine and Eusebius*, 73–74; Lenski, "Reign of Constantine" (CC), 60; Odahl, 72, 301.
15. ↑ *Emperor Constantine*, 15. Contra: J. Moreau, *Lactance: "De la mort des persécuteurs"*, *Sources Chrétiennes* 39 (1954): 313; Barnes, *Constantine and Eusebius*, 297.
16. ↑ Lactantius, *De Mortibus Persecutorum* 10.6–11; Barnes, *Constantine and Eusebius*, 21; Elliott, *Christianity of Constantine*, 35–36; MacMullen, *Constantine*, 24; Odahl, 67; Potter, 338.
17. ↑ MacMullen, *Constantine*, 24–25
18. ↑ *Oratio ad Sanctorum Coetum* 25; Odahl, 73.
19. ↑ 19.0 19.1 Drake, "The Impact of Constantine on Christianity" (CC), 126; Elliott, "Constantine's Conversion," 425–26.
20. ↑ Odahl, 69–72; Pohlsander, *Emperor Constantine*, 15; Potter, 341–342
21. ↑ 21.0 21.1 21.2 Lenski, "Reign of Constantine" (CC), 60–61; Odahl, 72–74; Pohlsander, *Emperor Constantine*, 15.
22. ↑ 22.0 22.1 22.2 22.3 22.4 Odahl, 75–76
23. ↑ Mattingly, 233–34
24. ↑ Southern, 170, 341
25. ↑ 25.0 25.1 25.2 Pohlsander, *Emperor Constantine*, 16–17
26. ↑ 26.0 26.1 26.2 Barnes, *Constantine and Eusebius*, 29; Elliott, *Christianity of Constantine*, 41; Lenski, "Reign of Constantine" (CC), 63; MacMullen, *Constantine*, 39–40; Odahl, 81–83.
27. ↑ *Panegyrici Latini* 7(6)3.4; Eusebius, *Vita Constantini* 1.22, qtd. and tr. Odahl, 83; Rodgers, 238.
28. ↑ 28.0 28.1 28.2 Barnes, *Constantine and Eusebius*, 32–34; Elliott, *Christianity of Constantine*, 42–43; Jones, 61; Lenski, "Reign of Constantine" (CC), 65; Odahl, 90–91; Pohlsander, *Emperor Constantine*, 17; Potter, 349–50; Treadgold, 29.
29. ↑ Barnes, *Constantine and Eusebius*, 33; Jones, 61
30. ↑ 30.0 30.1 30.2 Barnes, *Constantine and Eusebius*, 34–35; Elliott, *Christianity of Constantine*, 43; Lenski, "Reign of Constantine" (CC), 65–66; Odahl, 93; Pohlsander, *Emperor Constantine*, 17; Potter, 352
31. ↑ Lactantius, *De Mortibus Persecutorum* 30.1; Barnes, *Constantine and Eusebius*, 40–41, 305.
32. ↑ Lactantius, *De Mortibus Persecutorum* 31–35; Eusebius, *Historia Ecclesiastica* 8.16; Elliott, *Christianity of Constantine*, 43; Lenski, "Reign of Constantine" (CC), 68; Odahl, 95–96, 316.
33. ↑ 33.0 33.1 33.2 *Panegyrici Latini* 12(9)5–6; 4(10)21–24; Jones, 70–71; MacMullen, *Constantine*, 71; Odahl, 102, 317–18.
34. ↑ Petrus Patricius *excerpta Vaticana*, 190: Κωνσταντίνος εβουλεύσατο πρώτον εν Σαρδική μεταγαγείν τά δημόσια· φιλών τε τήν πόλιν εκείνην συνεχώς έλεγεν "η εμή Ρώμη Σαρδική εστι."
35. ↑ Dagron, *Naissance d'une Capitale*, 15/19
36. ↑ Bowder, Diana. *The Age of Constantine and Julian*. New York: Barnes & Noble, 1978
37. ↑ See Lactantius, *De Mortibus Persecutorum* 34–35