Metropolis of Pergamon
The Metropolis of Pergamon () was an ecclesiastical territory (diocese) of the Ecumenical Patriarchate of Constantinople in western Asia Minor, modern Turkey. Christianity in the city of Pergamon (modern Bergama), was introduced already from 1st century AD, while the local Christian community comprised one of the seven Churches of Asia mentioned at the Book of Revelation, written by John of Patmos. The bishopric of Pergamon was twice promoted to a metropolis: during the 13th–14th centuries, as well as for a short period in 1922. Today the "Metropolis of Pergamon and Adramyttium" is the see of a titular metropolitan.
Greece in the Roman era
The Greek peninsula fell under Roman rule in 146 BC, after the Battle of Corinth, when Macedonia became a Roman province. Afterwards, southern Greece was under Macedonian hegemony; however, some Greek "poleis" remained partly independent and avoided Roman taxation. In principle, the Kingdom of Pergamon (282 – 133 BC) was annexed to that territory in 133 BC, when King Attalus III (r. 138 – 133 BC. ) willed the lands to Rome; however, the Romans were slow in securing their claim to those lands, and a pretender to the throne of Pergamon, Eumenes III (Aristonicus) led a revolt with the help of the philosopher Blossius, which the Roman army suppressed in 129 BC, when the lands of Pergamon were divided among Rome, the Kingdom of Pontus, and Cappadocia.