PIETRO DI MORRONE Peter of Morrone ✝ Volume IX · p. 875 · 1952 English translation · Testo originale italiano Machine translation of the 1948–1954 Italian original. The original text is authoritative. PIETRO di MORRONE: V. CELESTINO V, PAPA. ← Previous article PIETRO DE MONTE Next article → PIETRO DI OLAF (PETRUS OLAI)