Name
- Butler, Amelia, wife of Thomas, Earl of Ossory1
- Butler, Emily, daughter of Lord Ossory1
- Butler, Henrietta, daughter of Lord Ossory1
- Butler, Thomas, Earl of Ossory, of Add MS 214921
- Butts, John, Consul at Elsinore1
- Callières, François, French diplomatist and author1
- Capell, Algernon, 2nd Earl of Essex1
- Carleton, Christopher, of Add MS 288871
- Carney, Richard, King-of-Arms in Ireland1
- Cary, Anthony, 5th Viscount Falkland, Commissioner of the Admiralty1
- Cary, Lucius, 2nd Viscount Falkland, author and politician, c 1610-16431
- Catinat, Nicolas, Marshal of France1
- Cavendish, William, Baron Ogle, Earl, Marquis, and 1st Duke of Newcastle1
- Chantrell, Francis, Colonel1
- Chaplin, John1
- Charlotta Sophia, Abbess of Hervorden, in Westphalia, daughter of James, Duke of Courland1
- Chudleigh, Thomas, of Add MS 288751
- Circle of Franconia1
- Cocks, John, servant to His Majesty's Council Chamber1
- Coghlan, Joseph, Attorney-General in Ireland1