Encyclopedias, Almanacs, Transcripts, and Maps
- Gregory II Cyprius, Patriach of Constantinople
- Gregory II, Pope, St.
- Gregory III, Patriach of Constantinople
- Gregory III, Pope, St.
- Gregory IV, Pope
- Gregory IX, Decretals of
- Gregory IX, Pope
- Gregory of Bergamo
- Gregory of Cerchiara, St.
- Gregory of Einsiedeln, Bl.
- Gregory of Elvira, St.
- Gregory of Nazianzus, St.
- Gregory of Nyssa, St.
- Gregory of Ostia, St.
- Gregory of Rimini
- Gregory of Tours, St.
- Gregory of Tours°
- Gregory of Utrecht, St.
- Gregory of Valencia
- Gregory Sinaites