 Council of Serdica

The Council of Serdica, or Synod of Serdica (also Sardica located in modern day Sofia, Bulgaria), was a synod convened in 343 at Serdica in the civil diocese of Dacia, by Roman dominate Emperors Constans I, augustus in the West, and Constantius II, augustus in the East.It attempted to resolve the Arian controversy, and was attended by about 170 bishops.