Marcus I of Byzantium

Marcus I (died 211) was the bishop of Byzantium for 13 years (198–211 A.D). He succeeded Bishop Olympianus. His term of office took place during Emperor Septimus Severus' persecution of Christians. His successor was Philadelphus.
==Sources==
* Marcus I page on Ecumenical Patriarchate website
Category:Patriarchs of Constantinople
Category:2nd-century bishops
Category:3rd-century bishops
Category:3rd-century Byzantine people
Category:Roman-era Byzantines