Author
- Peter Damian1
- Pliny the Elder1
- Pliny the Younger1
- Plutarch1
- Pomponius Mela1
- Porcellio1
- Pseudo-Bede1
- Pseudo-Dionysius of Halicarnassus1
- Pseudo-Eusebius of Cremona1
- Pseudo-Hegesippus1
- Pseudo-Jerome1
- Publius Papinius Statius1
- Ramon Llull1
- Raymond of Penyafort1
- Roberto Caracciolo1
- Rocca, Antonio1
- Rutilius Taurus Aemilianus Palladius1
- Sebastian of Naples1
- Sextus Empiricus1
- Sextus the Pythagorean1