Author
- Sixtus V1
- Smoyel1
- Stefano Fieschi1
- Stephan Brechtel1
- Stephanus Hugoneti1
- Stephen Langton1
- Sulaymān Ḥikmatī1
- Sylvester II1
- Syriac Orthodox Church1
- Taddea Salamon1
- Taddeo Alderotti1
- Tartaleoni family1
- Tengoccio d'Enea de Piccolomini1
- Theobaldus Episcopus1
- Theodore of Mopsuestia1
- Thiebaus de Maliers1
- Thomas Blount1
- Thomas Brooke1
- Thomas Malyus1
- Thomas Waleys1