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:—
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gregorian Year * Gregory I., the Great