The 400s decade ran from January 1, 400, to December 31, 409.
The 430s decade ran from January 1, 430, to December 31, 439.
The 420s decade ran from January 1, 420, to December 31, 429.
Year 403 (CDIII) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Theodosius and Rumoridus. The denomination 403 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.
Year 394 (CCCXCIV) was a common year starting on Sunday of the Julian calendar. At the time, it was known in Western Europe as the Year of the Consulship of Flavianus without colleague. The denomination 394 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.
Year 366 (CCCLXVI) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Gratianus and Dagalaifus. The denomination 366 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.
The 360s decade ran from January 1, 360, to December 31, 369.
The 370s decade ran from January 1, 370, to December 31, 379.
Year 383 (CCCLXXXIII) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Merobaudes and Saturninus. The denomination 383 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.
Year 375 (CCCLXXV) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year after the Consulship of Augustus and Equitius. The denomination 375 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.
Year 268 (CCLXVIII) was a leap year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Paternus and Egnatius. The denomination 268 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.
Year 372 (CCCLXXII) was a leap year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Modestus and Arintheus. The denomination 372 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.
Year 365 (CCCLXV) was a common year starting on Saturday of the Julian calendar. At the time, it was known in the West as the Year of the Consulship of Augustus and Valens. The denomination 365 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.
Year 360 (CCCLX) was a leap year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantius and Iulianus. The denomination 360 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.
Year 315 (CCCXV) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantinus and Licinianus. The denomination 315 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.
Gratian was emperor of the Western Roman Empire from 367 to 383. The eldest son of Valentinian I, Gratian was raised to the rank of Augustus as a child and inherited the West after his father's death in 375. He nominally shared the government with his infant half-brother Valentinian II, who was also acclaimed emperor in Pannonia on Valentinian's death. The East was ruled by his uncle Valens, who was later succeeded by Theodosius I.
Valentinian I, sometimes called Valentinian the Great, was Roman emperor from 364 to 375. He ruled the Western half of the empire, while his brother Valens ruled the East. During his reign, he fought successfully against the Alamanni, Quadi, and Sarmatians, strengthening the border fortifications and conducting campaigns across the Rhine and Danube. His general Theodosius defeated a revolt in Africa and the Great Conspiracy, a coordinated assault on Roman Britain by Picts, Scoti, and Saxons. Valentinian founded the Valentinianic dynasty, with his sons Gratian and Valentinian II succeeding him in the western half of the empire.
Hilary of Poitiers was Bishop of Poitiers and a Doctor of the Church. He was sometimes referred to as the "Hammer of the Arians" and the "Athanasius of the West". His name comes from the Latin word for happy or cheerful. In addition to his important work as bishop, Hilary was married and the father of Abra of Poitiers, a nun and saint who became known for her charity.
Epiphanius of Salamis was the bishop of Salamis, Cyprus, at the end of the 4th century. He is considered a saint and a Church Father by both the Eastern Orthodox and Catholic Churches. He gained a reputation as a strong defender of orthodoxy. He is best known for composing the Panarion, a compendium of eighty heresies, which included also pagan religions and philosophical systems. There has been much controversy over how many of the quotations attributed to him by the Byzantine Iconoclasts were actually by him. Regardless of this he was clearly strongly against some contemporary uses of images in the church.
Auxentius of Milan or of Cappadocia, was an Arian theologian and bishop of Milan. Because of his Arian faith, Auxentius is considered by the Catholic Church as an intruder and he is not included in the Catholic lists of the bishops of Milan such as that engraved in the Cathedral of Milan.
