Name
- Campbell, John, Lord Glenorchy1
- Carteret, John, Earl Granville1
- Casson, Isaac1
- Cavendish, William, Marquis of Hartington, afterwards 4th Duke of Devonshire, 8 May 1720–2 Oct 17641
- Charles Theodore, Elector Palatine of the Rhine1
- Charles VI, Holy Roman Emperor1
- Clarke, Francis, Gentleman Usher1
- Cleveland, John, Secretary of the Admiralty, 1706-17631
- Cobenzl, Louis, Comte, Austrian statesman1
- Coke, Thomas, Lord Leicester1
- Colloredo, Carlo Borromeo, Count, Austrian Minister at London1
- Colman, Francis, Resident at Florence and at Parma1
- Commissioners of the Customs1
- Comte de Bothmar1
- Cornake, P--, General1
- Cosne, Ruvigny, Captain; Secretary to the English Embassy in Paris1
- Cottrell, Clement, Master of Ceremonies1
- Craggs, John, jun, Secretary of State etc1
- Crespigny, Admiralty Proctor1
- Cressmer, George1