|←Author Index: Gr||Pope Gregory I
|Pope from 590 to 604.|
Works about Pope Gregory 
- “Pope St. Gregory I ("the Great"),” in Catholic Encyclopedia, 1913.
- “Gregorius I. (The Great), bp. of Rome” in A Dictionary of Christian Biography and Literature, 1911.
- “Gregory (Popes)/Saint Gregory” in Encyclopædia Britannica, (11th ed.), 1911.
|Works by this author published before January 1, 1923 are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.|