Author
- Peter Lombard1
- Peter Olivi1
- Peter Stamler1
- Petrus Comestor1
- Pierre Froissard1
- Pierre Poquet1
- Pierre de Luxembourg1
- Plato1
- Poggio Bracciolini1
- Pseudo-Augustine1
- Ranulf Higden1
- Richard of Saint Victor1
- Robert Ashley1
- Robine Bordinelle1
- Rocca, Antonio1
- Rolandino de' Passaggeri1
- Roman Catholic Archdiocese of Reims1
- Sebastião Lopes1
- Sicco Polenton1
- Simon Canu1