Gregorius
Martyrological notice
The historical Roman Martyrology commemorates Gregorius on 9 May. The Latin notice identifies the record as bishop and confessor. The source places the commemoration at Nazianzi, in Cappadocia.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Nazianzi, in Cappadocia, natalis beati Gregorii Episcopi, Confessoris et Ecclesiae Doctoris, ob singularem divinarum rerum doctrinam cognomento Theologi; qui collapsam Constantinopoli catholicam fidem, ipsius urbis Episcopatum gerens, restituit, haeresesque insurgentes compressit.