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Vatican City
Vatican City, Saint Pius I
Vatican City
Saint Peter Orseolo
Saint Peter the Apostle
Saint Petronilla
Saint Petronius of Bologna
Saint Philastrius
Saint Philip the Apostle
Saint Philip the Deacon
Saint Pionius
Saint Pius I
Saint Placidus
Saint Polycarp of Smyrna
Saint Polycarp of Smyrna Works
Saint Pontian
Saint Porphyrius of Gaza
Saint Possidius
Saint Praxedes
Vatican City
Catholic Encyclopedia
- Pope St. Pius I excommunicated Marcion, and died in about 154.
The Ecole Glossary
- Very short biographical summary, by Karen Rae Keck.
Popes Through the Ages
- Account of the pontificate of St. Pius I, from the book by Joseph Brusher.
Vatican City
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