Patristics or patrology is the study of the early Christian writers who are designated Church Fathers. The names derive from the combined forms of Latin pater and Greek patḗr (father). The period of the Church Fathers, commonly called the Patristic era, is generally considered to run from the end of New Testament times or end of the Apostolic Age (AD 100) to either AD 451 (the date of the Council of Chalcedon) or to the Second Council of Nicaea in 787.
The Church Fathers are generally divided into the Ante-Nicene Fathers, those who lived and wrote before the Council of Nicaea (325) and the Nicene and Post-Nicene Fathers, those who lived and wrote after 325. Also, the division of the Fathers into Greek and Latin writers is also common. Some of the most prominent Greek Fathers are Justin Martyr, Athanasius of Alexandria, Basil of Caesarea, Gregory of Nazianzus, John Chrysostom, Cyril of Alexandria, and Maximus the Confessor. Among the Latin Fathers are Tertullian, Cyprian, Jerome, Ambrose of Milan, Augustine of Hippo, and Gregory the Great.
There were also Church Fathers who wrote in languages other than Greek or Latin, such as Coptic, Syriac, Ge'ez, and Armenian, among others. Historically, Chalcedonian Christians have had less interest in these authors since the associated churches ended up rejecting the councils of Chalcedon (becoming Oriental Orthodox), or Ephesus (becoming the Church of the East). Recently this has begun to change, with the cooling of tensions between these branches of Christianity and the Western and Byzantine ones. There are Eastern Catholics who follow Oriental rites while remaining in communion with Rome.
Early centers of Christianity and Pentarchy
The major locations of the early Church fathers were Rome, Constantinople, Alexandria, Antioch, and the area of western north Africa around Carthage. Milan and Jerusalem were also sites.