By place Roman Empire •
February 8 –
Constantius III is appointed co-emperor (
Augustus) with his ineffectual brother-in-law,
Honorius, and becomes the real ruler of the
Western Roman Empire. •
March 25 –
Venice is founded at twelve o'clock noon (according to legend) with the dedication of the first church,
San Giacomo, at the islet of
Rialto (
Italy). •
June 7 – Emperor
Theodosius II marries
Aelia Eudocia, a woman of Greek origin. The
wedding is celebrated at
Constantinople with
chariot racing in the
Hippodrome. •
September 2 – Constantius III dies suddenly of an illness; his wife
Galla Placidia becomes, for the second time, a
widow. •
Castinus campaign against the Franks: A Roman army under command of
Castinus fights against the Franks in Northern Gaul.
Europe •
Rugila, chieftain of the
Huns, attacks the
dioceses of
Dacia and
Thrace (
Balkans). Theodosius II allows
Pannonian Ostrogoths to settle in Thrace, to defend the
Danube frontier. • The
Franks conquer new territories in their kingdom and sack the old
Roman capital
Augusta Treverorum (modern
Trier).
Persia •
Roman–Sassanid War: Theodosius II starts a war against the
Sassanids, sending an expeditionary force under command of
Ardaburius, and invades
Mesopotamia. • Autumn – Ardaburius devastates
Arzanene (
Armenia) and forces the Persians to retreat to
Nisibis (
Syria). King
Bahram V allies himself with the
Lakhmid Arabs of
Hirah. == Deaths ==