Author
- Sixtus V1
- Spain1
- Stefano Fieschi1
- Stephan Brechtel1
- Stephanus Hugoneti1
- Stephen Langton1
- Sylvester II1
- Taddea Salamon1
- Tartaleoni family1
- Tengoccio d'Enea de Piccolomini1
- Theobaldus Episcopus1
- Theodore of Mopsuestia1
- Thomas Brooke1
- Thomas Malyus1
- Thomas Waleys1
- Thomas de Hibernia1
- Thomas of Celano1
- Thomas of Chobham1
- Thomas of Ireland1
- Tibullus1