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|←Author Index: Gr||Gregory X
(c. 1210/1210 – 1276)
|born Tebaldo Visconti; Pope from 1271 to 1276|
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, (ed.) by Charles G. Herbermann and others, New York: The Encyclopaedia Press (1913)