1. (noun)Gregory, Gregory Nazianzen, Gregory of Nazianzen, St. Gregory of Nazianzen (Roman Catholic Church) a churchfather known for his constantfight against perceived heresies; a saint and Doctor of the Church (329-391)
2. (noun)Gregory, Gregory XVI, Bartolomeo Alberto Capillari Italianpope from 1831 to 1846; conservative in politics and theology; worked to propagate Catholicism in England and the United States (1765-1846)
3. (noun)Gregory, Gregory XIII, Ugo Buoncompagni the pope who sponsored the introduction of the moderncalendar (1572-1585)
4. (noun)Gregory, Gregory XII, Angelo Correr the Italianpope from 1406 to 1415 who worked to end the GreatSchism and who retired to make it possible (1327-1417)
6. (noun)Gregory, Gregory I, Saint Gregory I, St. Gregory I, Gregory the Great (Roman Catholic Church) an Italianpope distinguished for his spiritual and temporal leadership; a saint and Doctor of the Church (540?-604)
Definitions of 'gregory'
The Nuttall Encyclopedia
1. gregory the name of 16 Popes: G. I., the Great, Pope from 590 to 604; G. II., St., Pope from 715 to 731; G. III., Pope from 731 to 741; G. IV., Pope from 827 to 844; G. V., Pope from 996 to 997; G. VI., Pope from 1045 to 1046; G. VII., Pope from 1073 to 1085; G. VIII., Pope in 1187; G. IX., Pope from 1227 to 1241; G. X., Pope from 1271 to 1276; G. XI, Pope from 1370 to 1378; G. XII., Pope from 1406 to 1415; G. XIII., Pope from 1572 to 1585; G. XIV., Pope from 1590 to 1591; G. XV., Pope from 1621 to 1623; G. XVI., Pope from 1831 1846. Of these the following are worthy of note:—
Definitions of gregory 
