339

Events 
 By place 
 Roman Empire 
 Emperor Constantius II goes to his territory in the East. Persia under king Shapur II is attacking Mesopotamia. For the next 11 years the two powers battle with no real winner.

 By topic 
 Religion 
 Pope Julius I gives refuge at Rome to Athanasius.
 Eusebius of Nicomedia is made bishop of Constantinople.  Another Arian becomes bishop of Alexandria.

 Births 
 Aurelius Ambrosius, bishop of Milan (approximate date) 
 He Fani, empress of the Jin Dynasty (d. 404)
 Shi Shi, emperor of the Jie state Later Zhao (d. 349) 

 Deaths 
 Abaye, Babylonian amora
 Eusebius of Caesarea, bishop and first church historian (approximate date)
 Shemon Bar Sabbae, bishop of Seleucia-Ctesiphon 
 Wang Dao, statesman of the Jin Dynasty (b. 276)