Former Owner
- Christian Friedrich August Günther1
- Christian Hertzig1
- Christopher Tschudin1
- Clara von Vorssel1
- Clarence Howard Clark, Sr.1
- Clarence Lee Cline1
- Clarence S. Bement1
- Claude d'Urfé1
- Clement VII1
- Coella Lindsay Ricketts24
- Comte d'Aspremont-Lynden1
- D. Manning1
- Dame Margery Byrkenhed1
- Damiano Muoni1
- David Eugene Smith10
- David Gordon Lyon1
- David Laing1
- David McRoberts1
- David P. Wheatland1
- David Pulsifer1