Flavius Julius Constans, sometimes called Constans I, was Roman emperor from 337 to 350. He held the imperial rank of caesar from 333, and was the youngest son of Constantine the Great.
The Tetrarchy was the system instituted by Roman emperor Diocletian in 293 AD to govern the ancient Roman Empire by dividing it between two emperors, the augusti, and their juniors colleagues and designated successors, the caesares. This marked the end of the Crisis of the Third Century.
The 320s decade ran from January 1, 320, to December 31, 329.
The 330s decade ran from January 1, 330, to December 31, 339.
Year 337 (CCCXXXVII) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Felicianus and Titianus. The denomination 337 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Flavius Valerius Constantius "Chlorus", also called Constantius I, was Roman emperor from 305 to 306. He was one of the four original members of the Tetrarchy established by Diocletian, first serving as caesar from 293 to 305 and then ruling as augustus until his death. Constantius was also father of Constantine the Great, the first Christian emperor of Rome. The nickname Chlorus was first popularized by Byzantine-era historians and not used during the emperor's lifetime. After his re-conquering of Roman Britain, he was given the title 'Redditor Lucis Aeternae', meaning 'The Restorer of Eternal Light'.
Flavius Julius Crispus was the eldest son of the Roman emperor Constantine I, as well as his junior colleague (caesar) from March 317 until his execution by his father in 326. The grandson of the augustus Constantius I, Crispus was the elder half-brother of the future augustus Constantine II and became co-caesar with him and with his cousin Licinius II at Serdica, part of the settlement ending the Cibalensean War between Constantine and his father's rival Licinius I. Crispus ruled from Augusta Treverorum (Trier) in Roman Gaul between 318 and 323 and defeated the navy of Licinius I at the Battle of the Hellespont in 324, which with the land Battle of Chrysopolis won by Constantine forced the resignation of Licinius and his son, leaving Constantine the sole augustus and the Constantinian dynasty in control of the entire empire. It is unclear what was legal status of the relationship Crispus's mother Minervina had with Constantine; Crispus may have been an illegitimate son.
Flavia Maximiana Theodora was a Roman empress, wife of Constantius Chlorus.
Flavius Claudius Constantius Gallus (326–354) was a statesman and ruler in the eastern provinces of the Roman Empire from 351 to 354, as Caesar under emperor Constantius II, his cousin. A grandson of emperor Constantius Chlorus and empress Flavia Maximiana Theodora, and a son of Julius Constantius and Galla, he belonged to the Constantinian dynasty. He was born during the reign of his uncle Constantine the Great, and was among the few to survive the killings of male members of the imperial family in 337. Under Constantius II, he married Constantina, Constantine's daughter and Constantius' sister. As Caesar he dealt with a Jewish revolt (351–352) and ruled from Antioch, but the emperor came to mistrust him, and ultimately had him executed and replaced with his younger half-brother Julian.
The gens Flavia was a plebeian family at ancient Rome. Its members are first mentioned during the last three centuries of the Republic. The first of the Flavii to achieve prominence was Marcus Flavius, tribune of the plebs in 327 and 323 BC; however, no Flavius attained the consulship until Gaius Flavius Fimbria in 104 BC. The gens became illustrious during the first century AD, when the family of the Flavii Sabini claimed the imperial dignity.
Flavius Julius Constantius was a politician of the Roman Empire and a member of the Constantinian dynasty, being a son of Emperor Constantius Chlorus and his second wife Flavia Maximiana Theodora, a younger half-brother of Emperor Constantine the Great and the father of Emperor Julian.
Flavius Dalmatius, also known as Dalmatius the Censor, was a censor (333), and a member of the Constantinian dynasty, which ruled over the Roman Empire at the beginning of the 4th century.
Flavia Valeria Constantina, later known as Saint Constance, was the eldest daughter of Roman emperor Constantine the Great and his second wife Fausta, daughter of Emperor Maximian. Constantina may have received the title of Augusta by her father, and is venerated as a saint, having developed a medieval legend wildly at variance with what is known of her actual character.
Flavius Hannibalianus was a member of the Constantinian dynasty, which ruled over the Roman Empire in the 4th century AD.
Flavius Dalmatius Caesar was a Caesar (335–337) of the Roman Empire, and member of the Constantinian dynasty.
Flavia Maxima Constantia was the first empress consort of Gratian of the Western Roman Empire. According to Ammianus Marcellinus, Constantia was a posthumous child of Constantius II by his third wife Faustina. Her paternal grandparents were Constantine the Great and Fausta.
Flavia Julia Helena was a Roman Empress by marriage to Julian, Roman emperor in 360–363. She was briefly his Empress consort when Julian was proclaimed Augustus by his troops in 360. She died prior to the resolution of his conflict with Constantius II.
An unnamed daughter of Julius Constantius was the first known wife of Constantius II.
Galla was a member of the Constantinian dynasty that ruled in the Roman Empire.
Claudia was the purported mother of Roman emperor Constantius Chlorus according to ancient sources. These sources claim her to be a relative of Roman emperors Claudius Gothicus and Quintillus, a claim modern historians tend to view with suspicion.
