Author
- Quodvultdeus1
- Rabanus Maurus1
- Ricardus, de Mediavilla, approximately 1249-1308?1
- Richard de Saint-Laurent1
- Robert Grosseteste1
- Robert Holkot1
- Robert Kilwardby1
- Roffredo Epifanio1
- Roman Catholic Archdiocese of Reims1
- Seigneury de Brousses1
- Seneca1
- Sensatus1
- Shmuel Zanvill Segel of Balbronn1
- Sidonius Apollinaris1
- Simon Canu1
- Stephanus Hugoneti1
- Stephen Langton1
- Suetonius1
- Thomas of Cantimpré1
- Urban V1