Name
- Massei, Bartolomeo, Cardinal, Archbishop of Athens, and Nuncio to France1
- Missini, S-1
- Monaldi del Monte, Anna Rosa1
- Monaldi, Girolamo1
- Monte, Pompeo del1
- Oddi, Giacomo, Governor of Rimini1
- Origo, Nicolo Maria1
- Orsini, Filippo, Prince, Duke of Solofra1
- Orsini, Mondillo, Archbishop of Corinth, afterwards Patriarch of Constantinople1
- Palajo, Guido del1
- Pallavicino, Lazzaro, Archbishop of Thebes1
- Passerini, Giuseppe Maria1
- Paulucci, Camillo, Cardinal, Archbishop of Iconium1
- Paulucci, Fabrizio, Cardinal, Papal Secretary of State1
- Pico della Mirandola, Francesco Maria, Duke of Mirandola and Marquis of Concordia1
- Pico della Mirandola, Lodovico, Cardinal, Patriarch of Constantinople1
- Pietrabruna, Gregorio di, Frà1
- Poloni, Dionisio1
- Ponce de Leon, Teresa, wife of Joaquin, Duque de Arcos y Aveira1
- Procaccini, Pier Alessandro, Bishop of Avellino1