He was a very popular political figure, and since he was the Governor in the effective capital in the Roman West, he was a recognizable figure in the court of the Emperor Valentinian I. Ambrose never married.

Under Ambrose's major influence, emperors Gratian, Valentinian II and Theodosius I carried on a persecution of Paganism .< ref name = " MacMullen1984p100 "> MacMullen ( 1984 ) p. 100: ‘ The law of June 391, issued by Theodosius [...] was issued from Milan and represented the will of its bishop, Ambrose ; for Theodosius — recently excommunicated by Ambrose, penitent, and very much under his influence < sup > 43 </ sup > — was no natural zealot.

* 367, Battle of Solicinium — Romans under Emperor Valentinian I defeat yet another Alemanni incursion.

* 367 – Gratian, son of Roman Emperor Valentinian I, is named co-Augustus by his father and associated to the throne aged eight.

After holding the consulate at the age of two, Honorius was declared Augustus by his father Theodosius I, and thus co-ruler, on 23 January 393 after the death of Valentinian II and the usurpation of Eugenius.

* 364 – Valentinian I is proclaimed Roman Emperor.

* 380 – Edict of Thessalonica: Emperor Theodosius I, with co-emperors Gratian and Valentinian II, declare their wish that all Roman citizens convert to trinitarian Christianity.

Aelia Galla Placidia ( 392 – November 27, 450 ), daughter of the Roman Emperor Theodosius I, was the Regent for Emperor Valentinian III from 423 until his majority in 437, and a major force in Roman politics for most of her life.

Placidia was the daughter of Roman Emperor Theodosius I and his second wife Galla, who was herself daughter of Emperor Valentinian I and his second wife Justina.

Hoping to avoid the sack of Rome herself, Emperor Valentinian III sent three envoys, the high civilian officers Gennadius Avienus and Trigetius, as well as the Bishop of Rome Leo I, who met Attila at Mincio in the vicinity of Mantua, and obtained from him the promise that he would withdraw from Italy and negotiate peace with the emperor.

In Book I, Irenaeus talks about the Valentinian Gnostics and their predecessors, who go as far back as the magician Simon Magus.

Emperor Valentinian I moves to Paris to command the army and defend the Gallic cities.

* 375 – Valentinian I, Roman Emperor ( b. 321 )

A group of Damasus ' supporters, previously loyal to his opponent Felix, attacked and killed rivals loyal to Liberius ' deacon Ursinus in a riot that required the intervention of Emperor Valentinian I to quell.

This dissension climaxed with a riot which led to a three-day massacre and to the rare intervention of Emperor Valentinian I to uphold public order.

Missorium of Theodosius I, flanked by Valentinian II and Arcadius, 388

It is possible that he was dismissed from his command by the emperor Valentinian I after the loss of two of Theodosius ' legions to the Sarmatians in late 374.

The death of Valentinian I in 375 created political pandemonium.

From 364 to 375, the Roman Empire was governed by two co-emperors, the brothers Valentinian I and Valens ; when Valentinian died in 375, his sons, Valentinian II and Gratian, succeeded him as rulers of the Western Roman Empire.

His second wife ( but never declared Augusta ) was Galla, daughter of the emperor Valentinian I and his second wife Justina.

He was given the eastern half of the empire by his brother Valentinian I after the latter's accession to the throne.

* Valentinian I, Roman Emperor ( d. 375 )

He went, his eloquence in defense of the Church reportedly overawed the ministers of Emperor Valentinian, so he was permitted to retire without making the surrender of the churches.

When Magnus Maximus usurped the supreme power in Gaul, and was meditating a descent upon Italy, Valentinian sent Ambrose to dissuade him from the undertaking, and the embassy was successful.

In 386 Justina and Valentinian received the Arian bishop Auxentius, and Ambrose was again ordered to hand over a church in Milan for Arian usage.

In 392, after the death of Valentinian II and the acclamation of Eugenius, Ambrose supplicated the emperor for the pardon of those who had supported Eugenius after Theodosius was eventually victorious.

At first a gnostic Valentinian and Marcionist, Ambrose, through Origen's teaching, eventually rejected this theology and became Origen's constant companion, and was ordained deacon.

It is in the system of Valentinus that the name Dēmiourgos is used, which occurs nowhere in Irenaeus except in connection with the Valentinian system ; we may reasonably conclude that it was Valentinus who adopted from Platonism the use of this word.

Valentinian II, some hundreds of years later, protested against the same infractions and repeated similar laws: his was an officially Christian empire.

Aetius was given the duty of relieving Orléans by Emperor Valentinian III.

He was married to Eudocia, daughter of western Roman Emperor Valentinian III ( 419 – 455 ) and Licinia Eudoxia.

This self-proclaimed threat was hostile to Theodosius ' interests, since the reigning emperor Valentinian II, Maximus ' enemy, was his ally.

Valens and his brother Valentinian were both born in Cibalae ( in present-day Croatia ) into an Illyrian family in 328 and 321 respectively.

Valentinian felt that he needed help to govern the large and troublesome empire, and, on 28 March of the same year, appointed his brother Valens as co-emperor in the palace of Hebdomon.

* Spring – Justa Grata Honoria, eldest sister of emperor Valentinian III, sends her ring to Attila the Hun in an effort to escape a marriage being forced upon her by her brother.

* March 28 – Valens, brother of Valentinian I, is appointed co-emperor ( Augustus ) in the palace of Hebdomon ( Turkey ).

In 383 as commander of Britain, he usurped the throne against emperor Gratian ; and through negotiation with emperor Theodosius I the following year he was made emperor in Britannia and Gaul-while Gratian's brother Valentinian II retained Italy, Pannonia, Hispania, and Africa.

In 449, Attila received a message from Honoria, Valentinian III ’ s sister, offering him half the western empire if he would rescue for from an unwanted marriage that his brother was forcing her into.

Upon the death of Valentinian in 375, Gratian's brother Valentinian II was declared emperor by his father's soldiers.

Upon becoming emperor he made his brother Valens his co-emperor, giving him rule of the eastern provinces while Valentinian retained the west.

Valentinian and his younger brother Valens were the sons of Gratianus Major, a prominent commander during the reigns of emperors Constantine I and Constans I.

Valentinian selected his brother Valens as co-Augustus at Constantinople on 28 March 364.

Valentinian I becomes emperor and splits the empire with his brother Valens.

He was soon succeeded by Valentinian I, who named his brother Valens Emperor of the East.

Her younger brother, Valentinian III, was her full brother.

Oost notes that she accompanied her mother and younger brother as they set sail for Constantinople in Spring of 423, and that Honoria was with them when they joined the expeditionary force at Thessalonia in the Summer of 424 that would restore Galla Placidia and Valentinian to power in the West.

The sarcophagus to the right is attributed to Galla's son, Emperor Valentinian III, or to her brother, Emperor Honorius.

His brother in law, Maximinus was close to the emperor Valentinian I and was able to have Valentinus ' sentence commuted from execution to exile and he was sent to Roman Britain.

** Valentinian I's brother Valens ( 364-378 )

It was at this point when Arbogast joined the Roman imperial military service under the command of the emperor Gratian, son of Valentinian I and elder brother to Valentinian II, in the Western Roman Empire.