Name
- Caffarelli, Charles, Préfect du Calvados1
- Caldwell, James, Baronet, of Add MS 351261
- Call, John, 1st Baronet, politician and military engineer, 1732-18011
- Cartwright, Edmund, Reverend1
- Cartwright, John, of Add MS 351271
- Casande, -, correspondent of Arthur Young, fl 18081
- Casborne, John Spring1
- Catherwood, John James1
- Caulfeild, James, 1st Earl of Charlemont1
- Cecil, Henry, 10th Earl and (1801), Marquis of Exeter1
- Cecil, R-1
- Chatfield, Robert, Vicar of Chatteris1
- Chilver, S-1
- Clarke, S-1
- Cleghorn, David1
- Clerke, William, of Add MS 351291
- Conyngham, William, of Slane1
- Cottrell, Stephen, Commissioner for the Privy Seal1
- Coussmaker, W- R-1
- Coventry, Andrew, Professor of Agriculture at Edinburgh1