Author
- Peter Paludanus1
- Peter of Limoges1
- Peter of Poitiers1
- Piccolomini1
- Piccolomo Oltremonti1
- Podestà of Monticchiello (Italy)1
- Pseudo Bernard of Clairvaux1
- Pseudo-Seneca1
- Ptolemy1
- Publilius Syrus1
- Qadi Ayyad1
- Saadia Gaon1
- Sayf al-Din al-Amidi1
- Seneca1
- Sharif Radhi1
- Siena1
- Stephen Langton1
- Terence1
- Vincent of Beauvais1
- William Rothwell1