Name
- Caryll, Richard, of West Grinstead1
- Caryll, Richard, son of the 3rd J Caryll, a Jesuit1
- Cathery, Richard1
- Cauty, Ann1
- Cavalieri, Gasparo de', Cardinal1
- Cecil, James, of Add MS 282321
- Charles Emmanuel II, of Savoy1
- Charles II, of Spain, 1661-17001
- Chigi, Flavio, Cardinal 16571
- Christian V, of Denmark, 1646-16991
- Churchar, John1
- Cibo, Alderano, Cardinal 1645, Secretary of State 16761
- Cibo, Carlo, Duca di Massa1
- Ciceri, Carlo Steffano, Cardinal1
- Clarke, John, Secretary to the Lying-in-Hospital1
- Clarke, William, Solicitor1
- Cloche, Antonin, Master General of the Dominicans1
- Codebeau, -, correspondent of John Caryll, fl 16871
- Coke, Wenman Roberts1
- Colebrooke, James, 1st Baronet1