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List of popes - Wikipedia
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Popes and antipopes | List, Difference, & Facts | Britannica
Papacy | Definition, History, Roman Catholicism, List of Popes,
Detailed History Of The Papacy - PopeHistory.com
Holy Smoke, Antipopes And More: A Guide To Popes And The Papacy ...
The Papacy and the Vatican Palace | Essay | The Metropolitan …
A List of Every Single Pope There Has Ever Been - PopeHistory.com
Where Did the Pope Come From? | Desiring God