Gregorius
Martyrological notice
The historical Roman Martyrology commemorates Gregorius on 17 November. The Latin notice identifies the record as bishop and confessor. The source places the commemoration at Neocaesareae, in Ponto.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Neocaesareae, in Ponto, natalis sancti Gregorii, Episcopi et Confessoris, doctrina et sanctitate illustris, qui propter signa atque miracula, quae cum multa Ecclesiarum gloria perpetravit, Thaumaturgus est appellatus.