Name
- Smith, Thomas, Captain; of the Imperial Fleet1
- Spinola, Ambrosio, 1st Marqués de Los Balbases1
- Spinola, Francesco1
- Strozzi, Caterina, née Medici; wife of F di R Strozzi1
- Strozzi, Federigo di Roberto1
- Suárez, Gómez, 3rd Duke of Feria, Spanish nobleman, 1587-16341
- Sylos, Francesco, Knight of St John of Jerusalem1
- Tassinari, Giovanni Battista1
- Todeschi, Guglielmo1
- Toledo Osorio, Pedro Alvarez, Marqués de Villafranca, Governor of Milan 1616-16181
- Tomansi, Leopoldo1
- Tornaquinci, Raffaello, Knight of St John of Jerusalem1
- Torres, Cosimo, Cardinal1
- Tserclaes, Johann, Count of Tilly1
- Turco, Valentino del1
- Ubaldini, Roberto, Cardinal1
- Ubertini, Luca Antonio, Provveditore delle Farine in Tuscany1
- Ugolini, Family1
- Ulivi, Ulivo di Michele, banderaio, of Florence1
- Valentini, Gregorio1