* 681 – Bulgaria is founded as a Khanate on the south bank of the Danube after defeating the Byzantine armies of Emperor Constantine IV south of the Danube delta.

Schweitzer concludes that the 1st century theology, originating in the lifetimes of those who first followed Jesus, is both incompatible with, and far removed from, those beliefs later made official by the Roman Emperor Constantine in 325 CE.

Nicaea was convoked by Constantine I in May – August 325 to address the Arian position that Jesus of Nazareth is of a distinct substance from the Father.

According to the work De Administrando Imperio written by the 10th-century Byzantine Emperor Constantine VII, the Croats had arrived in what is today Croatia in the early 7th century, however that claim is disputed and competing hypotheses date the event between the 6th and the 9th centuries.

According to the Constantine VII christianization of Croats began in the 7th century, but the claim is disputed and generally christianization is associated with the 9th century.

He is often known as Constantine I, in reference to his place in modern lists of kings of Scots, though contemporary sources described Causantín only as a Pictish king.

It is likely that Causantín's ( Constantine I ) reign witnessed increased activity by Vikings, based in Ireland, in Northumbria and in northern Britain.

The same style is used of Kenneth's brother Donald I ( Domnall mac Ailpín ) and sons Constantine I ( Constantín mac Cináeda ) and Áed ( Áed mac Cináeda ).

Although the date of his birth is nowhere recorded, Constantine II cannot have been born any later than the year after his father's death, that is 879.

The Second Battle of Corbridge appears to have been indecisive ; the Chronicle of the Kings of Alba is alone in giving Constantine the victory.

A meeting at Eamont Bridge on 927 was sealed by an agreement that Constantine, Owen of Strathclyde, Hywel Dda, and Ealdred would " renounce all idolatry ": that is, they would not ally with the Viking kings.

Following his disappearance from Æthelstan's court after 935, there is no further report of Constantine until 937.

In this the " hoary " Constantine, by now around 60 years of age, is said to have lost a son in the battle, a claim which the Chronicle of the Kings of Alba confirms.

The monastery which Constantine retired to, and where he is said to have been abbot, was probably that of St Andrews.

Woolf suggests that the association of Constantine with the raid is a late addition, one derived from a now-lost saga or poem.

It is possible that Constantine had other children, but like the name of his wife, or wives, this has not been recorded.

The Pilgrim of Bordeaux reports in 333: There, at present, by the command of the Emperor Constantine, has been built a basilica, that is to say, a church of wondrous beauty.

According to tradition, Constantine arranged for the rockface to be removed from around the tomb, without harming it, in order to isolate the tomb ; in the centre of the rotunda is a small building called the Kouvouklion ( Kουβούκλιον ; Modern Greek for small compartment ) or Aedicule ( from Latin: aediculum, small building ), which supposedly encloses this tomb, although it is not currently possible to verify the claim, as the remains are completely enveloped by a marble sheath.

One important distinction between the post Constantine I ( reigned 306 AD-312 AD ) emperors and their pagan predecessors was cesaropapism, the assertion that the Emperor ( or other head of state ) is also the head of the Church.

Eusebius ' Life of Constantine ( Vita Constantini ) is a eulogy or panegyric, and therefore its style and selection of facts are affected by its purpose, rendering it inadequate as a continuation of the Church History.

Most in the crowd believed they knew what would follow ; Constantine and Maxentius, the only adult sons of a reigning Emperor, men who had long been preparing to succeed their fathers, would be granted the title of Caesar.

Until 1938 Canaris believed that his family was related to the Greek admiral, freedom fighter and politician Constantine Kanaris, which influenced his decision to join the navy.

During his reign, an elaborate genealogy tree was produced that purported that his ancestors were not mere peasants, as everyone believed, but descendants of the Arsacid ( Arshakuni ) kings of Armenia and also of Constantine the Great.

It is believed that French voyageurs named it after Saint Helena of Constantinople, mother of Emperor Constantine.

Constantine later recounted that the officers of the tank platoons believed they were carrying out the coup under his orders.

Christians at the time of Constantine, or at least at the time this explanation was devised, believed that the performance of the ritual itself conferred forgiveness of sins.

Constantine apparently believed in the abilities of his son and appointed Crispus as Commander of Gaul.

Marged Haycock and Mary Ann Constantine reject the idea that Cad Goddeu encodes ancient pagan religions as Graves believed but rather see it as a burlesque, a grand parody of bardic language.

One of Valla's reasons was that the document contained the word satrap which he believed Romans such as Constantine I would not have used.

After the Jewish – Roman wars ( 66 – 135 ), which Epiphanius believed the Cenacle survived, the significance of Jerusalem to Christians entered a period of decline, Jerusalem having been temporarily converted to the pagan Aelia Capitolina, but interest resumed again with the pilgrimage of Helena ( the mother of Constantine the Great ) to the Holy Land c. 326 – 28.

René Poupardin believed that Constantine was not a baptism name, but Settipani denies that.

It is believed the Rostra Diocletiani is depicted on the Arch of Constantine and not the Augustan structure.

The Greek type used to print the 1488 – 1489 Homer is believed to have been cast by the Cretan Demetrius Damilas from the type that he had used to print Constantine Lascaris ’ Erotemata ( Milan 1476 ), the first book to be printed entirely in Greek, based upon the hand of Damilas ’ s fellow scribe Michael Apostolis.

It is believed that the site was originally consecrated in the 4th century under the instruction of the Roman emperor Constantine the Great, who later gave the site to king Mirian III of Kartli after the conversion of his kingdom to Christianity in 327 A. D.

Other players who were involved in disputes with Hammond included Denis Compton, whose cavalier approach Hammond disliked, and Learie Constantine, who believed Hammond insulted him in the West Indies in 1925, although the two later made peace.

After the Jewish – Roman wars ( 66 – 135 ), which Epiphanius believed the Cenacle survived, the significance of Jerusalem to Christians entered a period of decline, Jerusalem having been temporarily converted to the pagan Aelia Capitolina, but interest resumed again with the pilgrimage of Helena ( the mother of Constantine the Great ) to the Holy Land c. 326 – 28.

The bridle of Constantine, for instance, is believed to be identical with a relic of this form which for several centuries has been preserved at Carpentras, but there is another claimant of the same kind at Milan.

Between this palace and the Lateran basilica was the equestrian statue of Marcus Aurelius, which at the time was erroneously believed to represent the Christian Emperor Constantine ( which association probably accounted for its preservation ).

Even so, Jack Hobbs said that Constantine's opening overs to him in the first Test were among the fastest he ever faced, Constantine believed his captain, Karl Nunes, over-bowled him ; the pair did not get along well.

Frustrated by a slow pitch which he believed was intended to neutralise his fast bowlers, Grant had ordered Constantine to bowl Bodyline against Yorkshire, and decided to repeat the tactics during the second Test.

Most critics believed that the West Indies underachieved in the Test series ; Constantine believed that one cause was the inadequacy of Grant as captain.

There was also an incident of racial abuse which Constantine believed the Central Lancashire League committee effectively covered up.

Swanton believed that Constantine was the first West Indian cricketer to make an impression on the British public: " he ... personified West Indian cricket from the first faltering entry in the Test arena in 1928 until the post-war emergence of the trinity of Worrell, Weekes and Walcott.