|←Author Index: Gr||Pope Gregory X
|Born Tebaldo Visconti, was Pope from 1271 to 1276.|
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Works about Pope Gregory
- "Gregory X." in the Encyclopædia Britannica, 9th ed. 1880.
- "Gregory X." in the Encyclopædia Britannica, 11th ed. 1911.
- “Pope Gregory X,” in Catholic Encyclopedia, New York: The Encyclopaedia Press (1913)