Flavius Valentinianus (371 – 15 May 392), commonly known as Valentinian II, was Roman Emperor from 375 to 392 A.D.

Flavius Valentinianus was born to Emperor Valentinian I and his second wife, Justina. He was the half-brother of Valentinian’s other son, Gratian, who had shared the imperial title with his father since 367. He had three sisters Galla, Grata and Justa. The elder Valentinian died on campaign in Pannonia in 375. Neither Gratian (then in Trier) nor his uncle Valens (emperor for the East) were consulted by the army commanders on the scene. Instead of merely acknowledging Gratian as his father’s successor, Valentinian I’s generals acclaimed the four-year old Valentinian augustus on 22 November 375. The army, and its Frankish general Merobaudes, may have been uneasy about Gratian's lack of military ability, and so raised a boy who would not immediately aspire to military command.

Gratian, forced to accommodate the generals who supported his half-brother, governed the trans-alpine provinces (including Gaul, Hispania, and Britain), while Italy, part of Illyricum, and Africa were under the rule of Valentinian. In 378, their uncle, the Emperor Valens, was killed in battle with the Goths at Adrianople, and Gratian invited the general Theodosius to be emperor in the East. As a child, Valentinian II was under the influence of his Arian mother, the Empress Justina, and the imperial court at Milan, an influence contested by the Catholic bishop of Milan, Ambrose.

Valentini Daskaloudi, (Greek: Βαλεντίνη Δασκαλούδη) born 1979 in Athens, is one of Greece's top fashion models. During the 2001 Miss Star Hellas pageant she won the title Miss Hellas (Greek: Miss Ελλάς) and was chosen to represent Greece at the Miss World pageant which was held in Sun City, South Africa; 93 contestants participated. Valentini has two diplomas; a Fashion Designer and one for Computer Science. Aside from being a model Valentini is also a gifted dress designer. Currently Valentini is pursuing a modeling career, represented by Ace Models Agency, appearing on the covers of numerous fashion magazines.

Valentinian I (Latin: Flavius Valentinianus Augustus; 321 – 17 November 375), also known as Valentinian the Great, was Roman emperor from 364 to 375. Upon becoming emperor he made his brother Valens his co-emperor, giving him rule of the eastern provinces while Valentinian retained the west.

During his reign, Valentinian fought successfully against the Alamanni, Quadi, and Sarmatians. Most notable was his victory over the Alamanni in 367 at the Battle of Solicinium. His brilliant general Count Theodosius defeated a revolt in Africa and the Great Conspiracy, a coordinated assault on Britain by Picts, Scots, and Saxons. Valentinian was also the last emperor to conduct campaigns across both the Rhine and Danube rivers. Valentinian rebuilt and improved the fortifications along the frontiers – even building fortresses in enemy territory.

Due to the successful nature of his reign and almost immediate decline of the empire after his death, he is often considered the "last great western emperor". He founded the Valentinian Dynasty, with his sons Gratian and Valentinian II succeeding him in the western half of the empire.

Trebonianus Gallus (Latin: Gaius Vibius Afinius Trebonianus Gallus Augustus; 206 – August 253), also known as Gallus, was Roman Emperor from 251 to 253, in a joint rule with his son Volusianus.

Gallus was born in Italy, in a family with respected ancestry of Etruscan senatorial background. He had two children in his marriage with Afinia Gemina Baebiana: Gaius Vibius Volusianus, later Emperor, and a daughter, Vibia Galla. His early career was a typical cursus honorum, with several appointments, both political and military. He was suffect consul and in 250 was nominated governor of the Roman province of Moesia Superior, an appointment that showed the confidence of Emperor Trajan Decius in him. In Moesia, Gallus was a key figure in repelling the frequent invasion attacks by the Gothic tribes of the Danube and became popular with the army, catered to during his brief Imperial rule by his official image: military haircut, gladiatorial physique, intimidating stance (illustration, left).

In June 251, Decius and his co-emperor and son Herennius Etruscus died in the Battle of Abrittus, at the hands of the Goths they were supposed to punish for raids into the empire. According to rumours supported by Dexippus (a contemporary Greek historian) and the Thirteenth Sibylline Oracle, Decius' failure was largely owing to Gallus who had conspired with the invaders. In any case, when the army heard the news, the soldiers proclaimed Gallus emperor, despite Hostilian, Decius' surviving son, ascending the imperial throne in Rome. This action of the army, and the fact that Gallus seems to have been on good terms with Decius' family, makes Dexippus' allegation improbable. Gallus did not back down from his intention to become emperor, but accepted Hostilian as co-emperor, perhaps to avoid the damage of another civil war.

The Roman emperor was the ruler of the Roman State during the imperial period (starting at about 27 BC). The Romans had no single term for the office although at any given time, a given title was associated with the emperor. If a man was "proclaimed emperor" this normally meant he was proclaimed augustus, or (for generals) imperator (from which English emperor ultimately derives). Several other titles and offices were regularly accumulated by emperors, such as caesar, princeps senatus, consul and Pontifex Maximus. The power of emperors was generally based on the accumulation of powers from republican offices and the support of the army.

Roman emperors refused to be considered "kings", instead claiming to be leaders of a republic, however nominal. The first emperor, Augustus, resolutely refused recognition as a monarch. Although Augustus could claim that his power was authentically Republican, his successor, Tiberius, could not convincingly make the same claim. Nonetheless, the Republican institutional framework (senate, consuls, magistracies etc.) was preserved until the very end of the Western Empire.