Name
- Campbell, Elizabeth, Baroness Hamilton, wife of John 5th Duke of Argyll1
- Campbell, Jane, Mrs1
- Campbell, John, 4th Earl and 1st Marquis (1832) of Breadalbane1
- Campbell, Walter, of Add MS 355411
- Carmichael, James, of Add MS 355091
- Charles III, of Spain, 1716-17881
- Charles Theodore, Elector Palatine of the Rhine1
- Clinton, John Pelham1
- Cobham, Al-1
- Cockerell, Samuel, Captain1
- Congress of Sistova1
- Cornwall, Susan1
- Coutts and Co, bankers, 1692-1
- Cox, Cox, and Greenwood, bankers1
- Cox, Richard, of Add MS 355051
- Craigie, Charles, correspondent of Sir Robert Murray Keith, fl 17751
- Craven, Elizabeth, wife of William 6th Baron Craven, afterwards wife of Karl Alexander Margrave of Brandenburg-Anspach1
- Crosbie, John, Viscount Crosbie, 2nd Earl of Glandore (1781)1
- Crosbie, Wil-1
- Crosse, William, of Add MS 355081