Try some LC SUBJECT searches in LibrarySearch.... Ask your librarian to show you how to use this feature. Be sure and ask your professors to clarify which era you are focusing on.
· Church history Primitive and early church, ca 30-600
· Church history, 4th century
· Church history, 6th century
· Church history, 7th century
· Church history Middle Ages, 600-1500
· Theology, Doctrinal History
· Theology, Doctrinal History Early Church, 30-600
· Theology, Doctrinal History, Middle Ages, 600-1500
· Fathers of the Church
· Apostolic Fathers
· Apologetics History Early Church, 30-600
· Apologetics History Middle Ages, 600-1500
· Alexandrian School
· Neoplatoism
· Antochian School
· Jesus Christ History of Doctrines Early Church, 30-600
· Jesus Christ History of Doctrines Middle Ages, 600-1500
· Trinity History of Doctrines Early Church, 30-600
· Trinity, History of Doctrines Middle Ages, 600-1500
· Councils and synods
· Council of Nicaea (1st: 325)
· Council of Constantinople
· Monasticism and religious orders History
· Monastic and religious life History
· Council of Ephesus
· Council of Chalcedon
· Photius I, Saint Patriarch of Constantinople, c. 820-ca. 891
· Schism Eastern and Western Church
· Schism, The Great Western, 1378-1417
Here are some of the significant names in the history of Post-Apostolic Christianity one may use as a starting point for finding a paper topic. See the Reference Tab above for Reference materials with good initial information on people and topics in Church history. Be sure and ask your professors if the person you choose is pertinent to the era they want you to focus on....
Eusebius
Origen
Tatian
Irenaeus
Tertullian
Antony the Hermit
Orosius
Justin Martyr
Diocletian
Constantine
Arius
Athanasius
Evagrius of Pontus
Ignatius of Antioch
Ephrem the Syrian
Macarius/ Pseudo-Macarius
John Chrysostom
Basil of Caesarea
Theodore of Mopsuestia
Cyril of Alexandria
Cyprian of Carthage
Pachomius
John of Damascus
Simeon Stylites
St. Augustine of Hippo
Denys the Areopagite
Benedict of Nursia
John Cassian
Irenaeus of Lyon
Gregory of Nyssa
Celestine
Basil the Great
Gregory Nazianzus
Cyril and Methodius