Author
- Order of the Argonauts of Saint Nicholas1
- Otto III1
- Ovid1
- Paschal II1
- Paschualis Bernardus1
- Pedro de Serra1
- Petrus de Monastero1
- Piccolomini1
- Piccolomo Oltremonti1
- Pietro Parenzi1
- Pius II1
- Pliny the Younger1
- Podestà of Monticchiello (Italy)1
- Pseudo-Bonaventure1
- Pseudo-Cicero1
- Pseudo-Dionysius the Areopagite1
- Pseudo-Phalaris1
- Ptolemy1
- Raginaldus Collus Rubeus1
- René of Anjou1