338 CE

Eusebius of Nicomedia becomes Patriarch of Constantinople, after Paul I is banished. Tuoba Yihuai, ruler of the Tuoba Dai clan, dies and is succeeded by his brother Tuoba Shiyiqian. The Church of Santa Costanza, Rome, starts to be built (approximate date).

In the 330s, the 4th century.

Conflict & Security

  • The Romans, allied with the Goths, arrive in the north of the Roman Empire to protect the Danube frontier.source
  • Shapur II, king of the Persian Empire, begins a widespread persecution of Christians. He orders forcible conversions to the state religion, Zoroastrianism, lest the Christians disrupt his realm while he is away fighting the Romans in Armenia and Mesopotamia.source
  • Emperor Constantius II intervenes against the Persians in Armenia.source

Religion & Belief

  • Non-Christians are persecuted by the Roman Empire as pagans.source
  • Eusebius of Nicomedia becomes Patriarch of Constantinople, after Paul I is banished.source

Culture & Society

  • The Church of Santa Costanza, Rome, starts to be built (approximate date).source

Births

  • Isaac the Great, Armenian catholicos (died 439)source

Deaths

  • Li Qi, Chinese emperor of Cheng Han (born 314)source
  • Tuoba Yihuai, prince of the Tuoba Dai clansource
  • Tuoba Yihuai, ruler of the Tuoba Dai clan, dies and is succeeded by his brother Tuoba Shiyiqian.source
  • Flavius Ablabius, Roman consul and politiciansource