Encyclopedias, Almanacs, Transcripts, and Maps
- Grégoire, Henri Baptiste
- Grégoire, Henri Baptiste°
- Gregorian Reform
- Gregorian Sacramentary
- Gregorius Akindynos
- Gregory (The Great) I, St. Pope
- 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.