* Constantine V

* Constantine III, King of Armenia, also called Constantine V

* Patriarch Constantine V of Constantinople

Under his son Constantine V, a council forbidding image veneration was held at Hieria near Constantinople in 754.

" The Byzantine Emperor Constantine V convened the Council of Hieria in 754.

The initial proceedings were interrupted by the violent entry of iconoclast soldiers faithful to the memory of the prior Emperor Constantine V. This caused the council to be adjourned until a reliable army could be assembled to protect any proceedings.

Example of the miliaresion silver coins, first struck by Leo III to commemorate the coronation of his son, Constantine V, as co-emperor in 720.

* Constantine V, who succeeded as emperor.

These humiliations, the weakening of the empire in the face of Muslim expansion, and the inability of the emperor to protect the papal estates against the Lombards, made Pope Stephen II turn from Emperor Constantine V. He appealed to the Franks to protect his lands.

Zachary is stated to have remonstrated with the Byzantine emperor Constantine V Copronymus on the part he had taken in the iconoclastic controversy.

His son, Constantine V ( 741 – 775 ), had held the Council of Hieria to make the suppression official.

The veneration of icons had been abolished by the energetic measures of Constantine V and the Council of Hieria which had described itself as the seventh ecumenical council, but is not recognised as such by either Catholic or Orthodox churches, since none of the five major patriarchs were represented.

* Artabasdus is Byzantine Emperor until the capital is stormed by Constantine V, who regains control and resumes the suppression of image-worship.

* June 18 – Constantine V succeeds Leo III as emperor of the Byzantine Empire.

* Constantine V re-ascends the throne of the Byzantine Empire.

* The Synod of Constantinople is called by Emperor Constantine V.

* Battle of the Rishki Pass: Byzantine Emperor Constantine V invades Bulgaria again, but this time his army is ambushed in the mountain passes of the Stara Planina.

* Leo IV succeeds Constantine V as Byzantine Emperor.

* September 14 – Constantine V, Byzantine Emperor

In Piranesi's view, the palazzo on the right is the Palazzo della Sacra Consulta, originally a villa built upon the ruins of the Baths of Constantine, which was adapted by Sixtus V as a civil and criminal court.

* Constantine VI succeeds his cousin, Constantine V, as King of Armenia.

The family therefore controlled a significant portion, if not all, of the imperial financial administration during the reign of Constantine V ( r. 741 – 775 ).

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.

Derived from Greek oikoumenikos (), " ecumenical " means " worldwide " but generally is assumed to be limited to the Roman Empire in this context as in Augustus ' claim to be ruler of the oikoumene / world ; the earliest extant uses of the term for a council are Eusebius ' Life of Constantine 3. 6 around 338, which states "" ( he convoked an Ecumenical Council ); Athanasius ' Ad Afros Epistola Synodica in 369 ;< ref >

Pope Stephen III, who convoked the Lateran Council ( 769 ) | Lateran Council of 769 which condemned Constantine II

Erected on the site of pagan temples and three previous St. Sophias, the first of which was begun by Constantine, this fourth church was started by Justinian in 532 and completed twenty years later.

Although he was committed to maintaining what the church had defined at Nicaea, Constantine was also bent on pacifying the situation and eventually became more lenient toward those condemned and exiled at the council.

From there she negotiated with the emperor for the safety of family members left in the capital, while protesting her sons ' innocence of hostile actions ; under the falsehood of making a vesperal visit to worship at the church, she deliberately excluded the grandson of Botaneiates and his loyal tutor, met with Alexios and Isaac and fled for the forum of Constantine.

" Under the persistence of the brethren who told him, " Emperor Constantine loves the church ," he accepted to write him a letter blessing him, and praying for the peace and safety of the empire and the church.

A church was erected in 326, when Helena, the mother of the first Byzantine emperor, Constantine, visited Bethlehem.

In 985, the Arab geographer al-Muqaddasi visited Bethlehem, and referred to its church as the " Basilica of Constantine, the equal of which does not exist anywhere in the country-round.

Emperor Constantine I presents a representation of the city of Constantinople as tribute to an enthroned Mary and Christ Child in this church mosaic.

Justinian also had Anthemius and Isidore demolish and replace the original Church of the Holy Apostles built by Constantine with a new church under the same dedication.

This church was to remain the burial place of the Emperors from Constantine himself until the 11th century.

The Church became overwhelmingly Gentile sometime in the 4th century, the era of Constantine I and Christianity and the birth of the State church of the Roman Empire.

For example in the mid 350 ’ s the city of Jerusalem was hit with drastic food shortages at which point church historians Sozomen and Theodoret reported “ Cyril secretly sold sacramental ornaments of the church and a valuable holy robe, fashioned with gold thread that the emperor Constantine had once donated for the bishop to wear when he performed the rite of Baptism ”.

Emperor Constantine I ordered in about 325 / 326 that the temple be demolished and the soil-which had provided a flat surface for the temple-be removed, instructing Macarius of Jerusalem, the local Bishop, to build a church on the site.

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.

Constantine directed his mother, Helena, to build churches upon sites which commemorated the life of Jesus Christ ; she was present in 326 at the construction of the church on the site, and involved herself in the excavations and construction.

The laws of Áed Find are entirely lost, but it has been assumed that, like the laws attributed to Giric and Constantine II ( Causantín mac Áeda ), these related to the church and in particular to granting the privileges and immunities common elsewhere.

# The endorsement by the popes and the church of the line of emperors beginning with the Emperors Constantine and Theodosius, later the Eastern Roman emperors, and finally the Western Roman emperor, Charlemagne and his successors, the Catholic Holy Roman Emperors.

The addresses and sermons of Eusebius are mostly lost, but some have been preserved, e. g., a sermon on the consecration of the church in Tyre and an address on the thirtieth anniversary of the reign of Constantine ( 336 ).

" Some scholars have even characterized the Liber Pontificalis, like the works of Pseudo-Isidore and the Donation of Constantine, as a tool used by the medieval papacy to represent itself " as a primitive institution of the church, clothed with absolute and perpetual authority.

Emperor Constantine I presents a representation of the city of Constantinople as tribute to an enthroned Mary and Christ Child in this church mosaic.

Surviving descriptions of Christian pilgrimages to the Holy Land date from the 4th century, when pilgrimage was encouraged by church fathers like Saint Jerome and established by Helena, the mother of Constantine the Great.

Early in 313, Constantine and fellow Emperor Licinius reached an agreement at Milan that they would grant freedom of religion to the Christians and other religions and restore church property.