When King Constantine's eldest son Constans is murdered at Vortigern's instigation, the two remaining sons, Ambrosius and Uther, still very young, are quickly hustled into exile in Brittany.

King Æthelstan was successful in securing Constantine's submission in 927 and 934, but the two again fought when Constantine, allied with the Strathclyde Britons and the Viking king of Dublin, invaded Æthelstan's kingdom in 937, only to be defeated at the great battle of Brunanburh.

Constantine's church was built as two connected churches over the two different holy sites, including a great basilica ( the Martyrium visited by Egeria in the 380s ), an enclosed colonnaded atrium ( the Triportico ) with the traditional site of Golgotha in one corner, and a rotunda, called the Anastasis (" Resurrection "), which contained the remains of a rock-cut room that Helena and Macarius identified as the burial site of Jesus.

To the east of the Chapel of Saint Helena, the excavators discovered a void containing a 2nd century drawing of a Roman ship, two low walls which supported the platform of Hadrian's 2nd century temple, and a higher 4th century wall built to support Constantine's basilica.

Benedict symbolically adopted Constantine's two sons Justinian and Heraclius.

In the Middle Ages, the Torre delle Milizie and the convent of St. Peter and Domenic were built, and above Constantine's building was erected the Palazzo Rospigliosi ; the two famous colossal marble statues of the " Horse Tamers ", generally identified as the Dioscuri with horses, which now are in the Piazza Quirinale, were originally in this Palazzo.

The removal of Claudius from the conspiracy is due to his later role as the progenitor of the house of Constantine, a fiction of Constantine's time, and may serve to guarantee that the original version from which these two accounts spring was current prior to the reign of Constantine.

Eleven of Constantine's thirteen companions who can be identified by name ( two bishops, three priests, and all the ranking members of the papal chancellery and household ) were also of Eastern extraction.

So, when Constantine's envoys arrived to parley at Ravenna, the fearful Honorius eagerly recognized Constantine as co-emperor, and the two were joint consuls for the year 409.

But by September, the tribes that had overrun the Rhine defenses, and had spent the intervening two years burning and plundering their way through Gaul, had reached the Pyrenees, where they broke through Constantine's garrisons and entered Hispania.

The two Augusti were in Milan to celebrate the wedding of Constantine's younger half-sister Constantia with Licinius.

The work combines two of Constantine's earlier treatises, " On the Governance of the State and the various Nations " (), concerning the histories and characters of the nations neighbouring the Empire, including the Turks, Pechenegs, Kievan Rus ', Arabs, Lombards, Armenians, and Georgians ; and the " On the Themes of East and West " (, known in Latin as De Thematibus ), concerning recent events in the imperial provinces.

As early as the building of Constantine's churches in Palestine there were two chief types of plan in use: the basilican, or axial, type, represented by the basilica at the Holy Sepulchre, and the circular, or central, type, represented by the great octagonal church once at Antioch.

Constantine's works are most readily available in two sixteenth-century printed editions, the 1515 Lyons edition and the 1536 Basel edition.

Geoffrey's account of the episode is based on Constantine's murder of two " royal youths " as mentioned by the 6th-century writer Gildas.

Some writers attribute to Isaac Israeli two other works which figure among Constantine's translations, namely, the Liber Pantegni and the Viaticum, of which there are three Hebrew translations.

After two days of evidence, the judge found in Constantine's favour, rejecting the defence's arguments and praising the way Constantine had handled the situation.

His two sons were appointed of important offices under Constantine's administration, but Flavius Dalmatius and his sons were killed in the purges that followed the Emperor's death in May 337.

She was a sister to Constantine I of Greece, and thus aunt of three kings and two queens, Constantine's three sons, who all became kings of Greece, and two of his daughters, who were queens, in name, of Romania and Croatia, respectively.

Another of Constantine's generals effectively cut all communication between Athens and the north.

Another of Constantine's generals effectively cut all communication between Athens and northern Greece.

In the circumstances, middle-ranking pro-junta officers neutralised and arrested Constantine's royalist generals and took command of their units, and subsequently put together a force to advance on Kavala to arrest the King.

Constantine's rule, however, validated Diocletian's achievements and the autocratic principle he represented: the borders remained secure, in spite of Constantine's large expenditure of forces during his civil wars ; the bureaucratic transformation of Roman government was completed ; and Constantine took Diocletian's court ceremonies and made them even more extravagant.

Zosimus mentions it, vaguely, as being a wooden construction while others specify that it was a pontoon bridge ; sources are also unclear as to whether the bridge was deliberately constructed as a collapsible trap for Constantine's forces or not.

As his forces broadly encircled the enemy cavalry, Constantine's own cavalry charged at the sides of the Maxentian cataphracts, beating them with iron-tipped clubs.

Of the battle itself, not much is known – Constantine's forces defeated Maxentius's troops, who retreated to the Tiber, and in the chaos of the fleeing army trying to cross the river, Maxentius fell into the water and drowned.

Constantine's position grew even more untenable ; his forces facing the rebel Gerontius were defeated at Vienne ( 411 ), where his son Constans was captured and executed.

Constantine's attempt to play them off one another only succeeds in making them join forces in a further plot.

That very day Constantine's army fought the forces of Maxentius and won the Battle of the Milvian Bridge ( 312 ), outside Rome.

On 21 May 1916, the day of King Constantine's name-day, the French forces of General Sarrail imposed martial law in Thessaloniki ( despite British opposition ), occupying the post office, the telegraph office, the telephone office, the railway facilities, the power station, and the gasworks.

Constantine's army reached the environs of Chrysopolis before the forces of Licinius.

Licinius, recognising that his surviving forces in Nicomedia could not stand against Constantine's victorious army, was persuaded to throw himself on the mercy of his enemy.

The style was used in bronze by Bernini for his spectacular St. Peter's baldachin, actually a ciborium ( which displaced Constantine's columns ), and thereafter became very popular with Baroque and Rococo church architects, above all in Latin America, where they were very often used, especially on a small scale, as they are easy to produce in wood by turning on a lathe ( hence also the style's popularity for spindles on furniture and stairs ).

By 312, however, Constantine and Maxentius were engaged in open hostility with one another, although they were brothers-in ‑ law through Constantine's marriage to Fausta, sister of Maxentius.

It was agreed that, next spring, Sphrantzes would sail for Georgia to bring the bride to Constantinople, but Constantine's plans were overtaken by the tragic events of 1453.

The four ( as evidenced by their staying behind ) were opposed to Constantine's new policy of rapproachment with Constantinople.

Maxentius was a prolific builder, whose achievements were overshadowed by Constantine's issue of a damnatio memoriae against him.

James Young Simpson, who had written several articles on archaeology, observed that there were contradictory accounts concerning the location of Constantine's death.

These cities, and the province of Helenopontus in the Diocese of Pontus, were probably both named after Constantine's mother.

The court decision also ruled that Constantine's human rights were not violated by the Greek state's decision not to grant him Greek citizenship and passport until he acquires a surname, which Constantine does not possess.

Constantine's parents were first cousins once removed.

Constantine's sympathies for Germany were made manifest during the Allies ' disastrous landing on Gallipoli.

The Allied Powers were opposed to Constantine's firstborn son George becoming King, as he had served in the German army before the war and identified with his father's pro-German policies.

There's a historical anecdote that soldiers in Saint Petersburg were said to chant " Constantine and Constitution ", but when questioned, many of them professed to believe that " Constitution " ( Russian konstitutsiya ) was Constantine's wife.

Under Constantine's successors, the title was also established at a territorial level: magistri peditum and magistri equitum were appointed for every praetorian prefecture ( per Gallias, per Italiam, per Illyricum, per Orientem ), and, in addition, for Thrace and, sometimes, Africa.

Christian Sabbathkeepers, who never accepted Emperor Constantine's edict in 321 A. D., the first enforcing Christian worship on Sunday rather than on Sabbath, were demonized and accused of witchcraft ; hence, the accusatory nomenclature, " witches ' sabbath.

Constantine's campaigns were costly ; during his reign the Byzantine Empire's annual revenues were reduced to about 1, 800, 000 nomismata due to his various wars and the Arab conquests.

Constantine's efforts to retake themes lost to the Arabs were the first such efforts to have any real success.

In it he describes how Saint Helena, Constantine's aged mother, had the temple destroyed and the Sepulchre uncovered, whereupon three crosses and the titulus from Jesus's crucifixion were uncovered as well.