Author
- Justinian I1
- Leo Archpriest1
- Martin of Opava1
- Oglerio di Lucedio1
- Peter Lombard1
- Peter of Limoges1
- Petrus Riga1
- Piccolomini1
- Piccolomo Oltremonti1
- Podestà of Monticchiello (Italy)1
- Pseudo Bernard of Clairvaux1
- Pseudo-Seneca1
- Ptolemy1
- Publilius Syrus1
- Rashi1
- Robert Holkot1
- Roman Catholic Archdiocese of Reims1
- Siena1
- Stephen Langton1
- Terence1