Former Owner
- Christian Gottlieb Schwarz1
- Christine Blondeau1
- Christophorus de Stinglhaim1
- Church of St James, Sarsden1
- Clarence S. Bement1
- Claude Joseph Constant Despine1
- Claude d'Urfé1
- Clement Griscom1
- Clement VII1
- Clément de Renesse-Breidbach1
- Coella Lindsay Ricketts1
- Cordwainer Smith1
- Cortlandt F. Bishop1
- Count Alexis de Golowkin1
- Dame Margery Byrkenhed1
- Dawson Turner1
- Diogo de Mello family1
- Dionne Louange1
- Dionysiĭ Vasilevich1
- Domenico Levera1