He was a theologian who attended the Council of Ephesus in 431 , during the reign of Byzantine Emperor Theodosius II .
Theodotus of Ancyra was a fifth - century bishop of Ancyra ( modern Ankara ) .
Theodotus of Ancyra was a bishop who attended the Council of Ephesus in 431 , during the reign of Byzantine Emperor Theodosius II .
Theodotus of Ancyra was a fifth - century bishop of Ancyra ( modern Ankara ) .