Former Owner
- Carlo Morbio1
- Charles Chardin1
- Charles Edward Harris-St. John1
- Charles G. Napier1
- Charles Joseph Harford1
- Charles Sessler1
- Charles William Dyson Perrins1
- Charles-Gilbert Morel de Vindé1
- Christopher Tschudin1
- Clarence Howard Clark, Sr.1
- Claude d'Urfé1
- Clement VII1
- Dame Margery Byrkenhed1
- David P. Wheatland1
- David Pulsifer1
- Diego Clemencín1
- Diego de Arce y Reinoso1
- Dorothy Stahl Brady1
- Earl of Chesterfield1
- Eberhard von Kniestedt1