Author
- Pseudo-Prosper1
- Ptolemy1
- Quintus Aurelius Symmachus1
- Quodvultdeus1
- Rabanus Maurus1
- Ricardus, de Mediavilla, approximately 1249-1308?1
- Robert Grosseteste1
- Robert Holkot1
- Robert Kilwardby1
- Roman Catholic Archdiocese of Reims1
- Seneca1
- Sensatus1
- Sidonius Apollinaris1
- Stephanus Hugoneti1
- Stephen Langton1
- Suetonius1
- Thomas of Cantimpré1
- Urban V1
- Usuard1
- Virgil1