|←Author Index: Gr||Pope Gregory IV
|Was Pope from December 20, 827 to January 11, 844|
||There are no works on Wikisource by this author. If you'd like to add a new text, please review Help:Adding texts.|
Works by Gregory IV
Works about Gregory IV
- "Gregory IV." in the Encyclopædia Britannica, 9th ed. 1880.
- "Gregory IV." in the Encyclopædia Britannica, 11th ed. 1911.