Below is a list of theological writings from Ancient Rome!
Paul of Tarsus
Pauline Epistles (c. 50 - 67 CE)
Mark
Gospel of Mark (c. 70 CE)
Matthew
Gospel of Matthew (c. 80 - 90 CE)
Luke
Gospel of Luke (c. 80 - 90 CE)
Luke
Acts of the Apostles (c. 80 - 90 CE)
John
Gospel of John (c. 90 - 100 CE)
Lactantius
Institutiones Divinae (c. 303 - 311 CE)
St. Athanasius
On The Incarnation (c. 318 - 319 CE)
Life of Anthony (c. 360 CE)
Hilary of Poitiers
The Trinity (c. 356 - 359 CE)
St. Jerome
Letters (c. 370s - 420 CE)
Epiphanius of Salamis
The Panarion of Epiphanius of Salamis (c. 374 - 377 CE)
St. Ambrose
On the Holy Spirit (c. 381 CE)
On the Duties (c. 386 CE)
Hexameron (c. 386 - 387 CE)
On the Mysteries (c. 387 CE)
St. Augustine
On Free Choice of the Will (c. 388 - 395 CE)
On Christian Doctrine (c. 396 - 426 CE)
Confessions (c. 397 - 400 CE)
City of God (c. 413 - 426 CE)
On the Trinity (c. 400 - 416 CE)