Name
- Potier de Gévres, Léon, Cardinal, Archbishop of Brages, Papal Prothonotary1
- Pottri, Pietro Nati1
- Pouget, Jean Henri1
- Quaratesi, Antonio1
- Reineggs, Jacques Mollart, Physician1
- Richie, Robert, Consul at Venice1
- Ridolfi, Cunctessima, wife of Pietro Ridolfi1
- Rivarola, Antoine, Comte, Colonel1
- Rospigliosi, Felix, Cardinal1
- Sadoleto, Giacomo, Papal Secretary of State, afterwards Cardinal1
- Salviati de' Medici, Lucretia, wife of Giacomo Salviati1
- Salviati, Piero, of Add MS 237211
- Sasso, Giovanni Maria, of Add MS 237301
- Shanahan, Michael1
- Stackelberg, Waldemar1
- Stanhope, Philip, 2nd Earl Stanhope, d 17861
- Toaldo, Giuseppe, Professor of Astronomy at Padua1
- Tor, F-1
- Torelli, Giuseppe, of Add MS 237291
- Tozzetti, Giovanni Targioni, Professor of Botany at Florence1