Author
- Roman Catholic Archdiocese of Siena1
- Rutilius Taurus Aemilianus Palladius1
- Sebastian Schindler1
- Serapion the Younger1
- Sextus the Pythagorean1
- Siena1
- Simon Bredon1
- Sixtus IV1
- Stephanus Hugoneti1
- Sylvester II1
- Theobaldus Episcopus1
- Theodore of Mopsuestia1
- Thomas Brooke1
- Thomas of Capua1
- Tristano Caracciolo1
- Urban V1
- Usuard1
- Valerius Maximus1
- Vegetius1
- Veruela Abbey1