Author
- Rabanus Maurus1
- Ranieri Farnese1
- Ricardus, de Mediavilla, approximately 1249-1308?1
- Richard Bolter1
- Richard Rolle1
- Richard de Geveldale1
- Robert Ashley1
- Roberto Caracciolo1
- Seneca1
- Simon Bredon1
- Spain1
- Suetonius1
- Thomas Aquinas1
- Titus Livius1
- Urban V1
- Usuard1
- Vegetius1
- Walter of Châtillon1
- William Babington1
- William Perault1