Author
- Pierre Bersuire1
- Pierre de Maucreux1
- Pietro Paolo Muscarello1
- Pius II1
- Pius IV1
- Plato1
- Pliny the Elder1
- Polo, Marco, 1254-1323?1
- Pomponius Mela1
- Porphyry1
- Pseudo-Joachim of Fiore1
- Publius Papinius Statius1
- Ranieri Farnese1
- Republic of Venice1
- Richard Bolter1
- Richard Carmarden1
- Richard II of England1
- Richard Nykke1
- Richard Ward1
- Robine Bordinelle1