Events

By place

Roman Empire

• January/February – Emperor Theodosius I is baptized.

• February 27 – Theodosius I, with co-emperors Gratianus and Valentinian II, declare their wish that all their peoples convert to trinitarian Christianity, in accordance with the patriarchs of Rome and Alexandria, implicitly rejecting the Arianism of the patriarch of Constantinople as heretical.

• November 24—Theodosius I makes his adventus, or formal entry, into Constantinople.

• Bedouin Queen Mavia's Saracen troops defeat a Roman army.

• Invasion of the Vandals: Gratian is forced to cede Upper Pannonia to them.

Europe

• The Rock of Cashel is built in Ireland.

• Athanaric becomes king of the Thervingi upon Fritigern's death.

Asia

• The annexation of western provinces by Gupta give him control over commerce with Europe and Egypt.

The Pacific

• Approximate (C14) date of the first signs of a human presence on Easter Island.

By topic

Arts and sciences

• Important works on mathematics and astronomy are written in Sanskrit.

Religion

• St. Gregory Nazianzus is alleged to have ordered the burning of all known copies of Sappho's poetry (disputed: see Sappho).

• Tyconius writes a commentary on the Bible's Book of Revelation.

• A cathedral is built in Trier, Germany.

• The Council of Saragossa is held.

• Saint Ambrose introduces popular music into church services.

Births

• St. Alexios (in Rome)

• Eutyches, opponent of the Nestorian Assyrians

• Hephaistio of Thebes, Egyptian astrologer

• Kalidasa, the author of "Shakuntala" ,"Meghaduta"(The Cloud Messenger) (approximate date)

• St. Peter Chrysologus (at Imola in Emilia)

• Socrates Scholasticus, church historian

Deaths

• February 15—Peter II, Patriarch of Alexandria

• Fritigern, King of the Visigoths

• Frumentius, Syrian Christian trader

• Samudragupta, ruler of the Gupta Empire

• Empress Wang Fahui