Author
- Pietro Marcello1
- Pietro de' Crescenzi1
- Plato1
- Plutarch1
- Poggio Bracciolini1
- Pope1
- Priscian1
- Pseudo-Augustine1
- Pseudo-Bonaventure1
- Pseudo-Cicero1
- Pseudo-Dionysius of Halicarnassus1
- Pseudo-Hegesippus1
- Raimondo Marliani1
- Ranieri Farnese1
- Raymond of Penyafort1
- Richard Bolter1
- Richard Maidstone1
- Richard of Saint Victor1
- Robert Ashley1
- Robert Reade1