Former Owner
- Brunori Cadamosto1
- C.J. Spence1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate1
- Champmol1
- Charles Brodrick1
- Charles Fontaine1
- Charles Joseph Harford1
- Chartreuse Saint-Sixte de Rettel1
- Claude Le Muet1
- Clement XI1
- Clément de Renesse-Breidbach1
- Cologne Charterhouse1
- Conradus Eerens1
- Constance de Foix1
- Convento di San Giusto alle Mura1
- Convento di San Paolo1
- Dana Hill1
- Davis & Harvey1
- Davis & Orioli1
- De Raude1