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St. Callistus I
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Tomb of Pope Callixtus III in the Form of a Sarcophagus in the Vatican Grottoes in Basilica of St. Peter in Rome in Italy Editorial Photo - Image of peter, history: 235361641
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Elena on Twitter: "Cathedral built next to the monastic community founded by Saint David in the 6th century, after being granted papal privilege as a pilgrimage site by Pope Callixtus II in
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File:Pope Callixtus III.jpg - Wikimedia Commons
