Author
- Porphyry1
- Pseudo-Cicero1
- Pseudo-Cyprian1
- Pseudo-Prosper1
- Pseudo-Seneca1
- Ptolemaeus Tancredius1
- Ptolemy1
- Qasem-e Anvar1
- Quintus Curtius Rufus1
- Rabanus Maurus1
- Radbod II1
- Rapolano Terme1
- Remigius of Auxerre1
- Richard II of England1
- Robert Grosseteste1
- Robert de Gretham1
- Roger Bigod, 2nd Earl of Norfolk1
- Roman Catholic Diocese of Osma-Soria1
- Roman Curia1
- Sacro Regio Consiglio1