Author
- Pietro Candido Decembrio2
- Pietro de' Crescenzi2
- Pius II2
- Pope2
- Prosper of Aquitaine2
- Pseudo Bernard of Clairvaux2
- Pseudo-Cicero2
- Pseudo-Jerome2
- Pseudo-Phalaris2
- Pseudo-Seneca2
- Ptolemy2
- Ranulf Higden2
- Rashi2
- Regiomontanus2
- Remigius of Auxerre2
- Richard de Saint-Laurent2
- Robert Holkot2
- Sulpicius Severus2
- Thomas of Capua2
- Vegetius2