Name
- Chiaramonti, Gregorio Barnaba, Bishop of Tivoli, afterwards Pope Pius VII1
- Chiari, Romualdo1
- Christini, Giovanni Battista1
- Cid, Giuseppe1
- Ciotti, Paolo, Bishop Elect of Segni1
- Clement XI, Pope1
- Coleine, Luigi Maria, Governor of Cisterna1
- Colonna da Stigliano, Niccolò, Cardinal Legate of Romagna1
- Consalvi, Ercole, Cardinal, Papal Secretary of State1
- Corbacho, Miguel Garcia, Parish priest of Montello in Andalusia1
- Corneo, Padre Gaetano1
- Darmy, Pietro, correspondent of Cardinal Henry Stuart, fl 17841
- Dessori, A M, correspondent of Cardinal Henry Stuart, fl 18061
- Devoti, Giovanni, Bishop of Anagni and Archbishop of Carthage, 1744-18201
- Dominicis, Lorenzo, Bishop of Civita Castellana and Orte, fl 1787-18221
- Duraa, Christian slave in Algeria and correspondent of Cardinal Henry Stuart, fl 17841
- Durani, Antonio, correspondent of Cardinal Henry Stuart, fl 17941
- Eremita, Pasquale, monk, fl 17841
- Fabi, Carlo Maria, Bishop of Amelia, 1744-17981
- Fabyacappa, Leonardo, correspondent of Cardinal Henry Stuart, 1781-17841