Name
- Portugal, Diego, Conde de Jelues1
- Pucci, Alessandro, Vicar of Florence; Apostolic Protonotary1
- Ravelli, Pietro1
- Reno, Piero, of Tuscany1
- Rhò, —, Senator Spanish envoy to Venice1
- Riccardi, Gabriello, Florentine Ambassador in Rome1
- Ricci, Scipione de', Bishop of Pistoia and Prato1
- Ridolfi, Niccolò, of Add MS 487371
- Rosenbach, Johann Conrad, Knight of St John of Jerusalem1
- Rubbino, Nicola, slave, in Chios1
- Rudolph II, Emperor of Germany1
- Sacchettini, Family1
- Saminiati, Felice1
- Secco, Niccolo, Captain ambassador to Milan1
- Segneri, Paolo, Jesuit preacher1
- Sera, Cosimo del, Principal Minister of the Magona in Tuscany1
- Sixtus V, Pope1
- Spannocchi, Silvio1
- Spinola, Ambrosio, 1st Marqués de Los Balbases1
- Spinola, Ambrosio, Marqués de Los Balbases, Spanish army general; Governor of Milan, 1569-16301