Author
- Plautus1
- Poggio Bracciolini1
- Procopius1
- Prosdocimus de Beldemandis1
- Pseudo-Dionysius the Areopagite1
- Ptolemy1
- Rabanus Maurus1
- Ralph of Longchamp1
- Ranulf Higden1
- Raymond of Penyafort1
- Remigius of Auxerre1
- Richard Rolle1
- Richard de Fournival1
- Roger Alban1
- Rudulphus Bollartus1
- Rutilius Taurus Aemilianus Palladius1
- Seneca1
- Stephen Batman1
- Theodore of Mopsuestia1
- Thomas Achelley1