Name
- Bonaparte, Lucien, 1st Prince of Canino and Musignano, 1775-18401
- Borgia, Stefano, Cardinal; of Add MS 346391
- Bottini, Lorenzo Prospero, Cardinal1
- Bourbon, Ferdinand Marie Louis Philippe Joseph, Duke of Parma1
- Brancadoro, Cesare, Cardinal1
- Bray, François Gabriel, Comte, Bavarian diplomatist1
- Busca, Ignazio, Archbishop of Emesa1
- Butera, - di, wife of Giuseppe, Principe di Butera1
- Calcagnini, Guido, Cardinal1
- Caleppi, Laurenzo, Cardinal Archbishop of Nisibis1
- Canaveri, Giovanni Battista, Bishop of Biella and Vercelli1
- Capaccini, Francesco1
- Caprano, Pietro, Cardinal, Archbishop of Iconium1
- Caraccioli, Domenico, Marquis, Neapolitan Ambassador in London1
- Carafa, Francesco, Cardinal, Prefect of the Congregazione de' Vescovi e Regolari1
- Carafa, Martino, Principe di Belvedere1
- Carron, Angelo Maria, Marquis of Aigblanche, Sardinian Secretary of State1
- Caselli, Carlo Francesco, Cardinal1
- Casoni, Filippo, Archbishop of Pirgi; Papal Nuncio in Spain1
- Cataneo, Camillo, Archbishop of Acerenza and Matera1