340
Year 340 was a leap year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Acindynus and Valerius. The denomination 340 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.
Events
By place
Roman Empire
- Constantinople, capital of Emperor Constantius II, becomes the largest city in the world, taking the lead from Rome, capital of his brother Constans I.
- Constantine II, emperor of the western part of the Roman Empire, crosses the Alps and attacks the army of his brother Constans I, emperor of the central part of the Roman Empire. They clash at Aquileia in northern Italy. Constantine is killed in a skirmish by an ambush of Constans' troops.
- Constans is left sole ruler of the Western part of the Roman Empire, with his other brother, Constantius II, emperor of the Eastern portion.
By topic
Religion
Births
- Aurelius Ambrose, bishop of Milan
- Amphilochius, bishop of Iconium
- Jerome, priest and Bible translator
- Justina, Roman empress and regent
- Peter of Sebaste, bishop of Armenia
- Quintus Aurelius Symmachus, Roman consul
Deaths
- October 28 - Cunera, Christian martyr
- Constantine II, Roman consul and emperor
- Kui An, Indian general and minister of Later Zhao
- Macrina the Elder, Christian saint
- Tao Bao, Chinese general of Later Zhao
- Yu Liang, Chinese general