Dear Jeremy,
Thanks for the question.
I am not steeped in Church history and the writings of the Early Church Fathers but if St. Basil was addressing the clergy of Neocaesarea, one can only assume that the Gregory he was referring to was Gregory Thaumaturgus also known as Gregory of Neocaesarea: (A.D. 213 - 270).
The only other possible Gregory could have been St. Gregory of Nazianzen as St. Basil the Great and St. Gregory of Nazianzen were long time friends from a young age to an old one. Their feasts are also celebrated together on the same day: January 2nd.
Below are other Early Church Fathers relevant to your question and when they lived.
Early Church Father |
Lifespan |
St. Basil the Great |
(A.D. 328 - 379) |
|
|
Gregory Thaumaturgus
also known as Gregory of Neocaesarea |
(A.D. 213 - 270) |
St. Gregory of Nazianzen |
(A.D. 318 - 389) |
St. Gregory of Nyssa |
(A.D. c. 335 - c. 394) |
Pope St. Gregory the Great (I) |
(A.D. 540 – 604) |
St. Gregory of Narek |
(A.D. 951-1003) |
I hope this helps,
Mike
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