Former Owner
- Carl Hermann Grabauer1
- Carleton Rubira Richmond1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate3
- Carlo Bonaparte1
- Carlo Francesco Frasconi1
- Carlo Morbio1
- Cecil Deedes1
- Charles Alexander de Cosson1
- Charles Allen Munn1
- Charles Archibald Stonehill1
- Charles B. Hoyt1
- Charles Burr1
- Charles Butler2
- Charles D. Humberd2
- Charles Fairfax Murray3
- Charles Hoff3
- Charles Joseph Harford1
- Charles Sauvageot1
- Charles Stephen Ascherson3
- Charles William Dyson Perrins2