Cyriacus I of Byzantium
Cyriacus I of Byzantium succeeded Philadelphus of Byzantium as bishop of Byzantium and governed the local church for 13 years ; in some catalogues appears under the name Cyrillianus or Kyriacos.
Cyriacus I of Byzantium succeeded Philadelphus of Byzantium as bishop of Byzantium and governed the local church for 13 years ; in some catalogues appears under the name Cyrillianus or Kyriacos.