Former Owner
- Benetto Spinelli1
- Bernard Serrigny1
- Bernardo Bembo1
- Bernardus de Pedio1
- Boies Penrose1
- Camilla Doria Pallavicini1
- Carl Alphons Geigy-Hagenbach1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate1
- Carlos José Gutiérrez de los Ríos y Rohan Chabot Fernán-Núñez1
- Charles Butler1
- Charles Chardin1
- Charles Sessler1
- Charles Seymour, 6th Duke of Somerset1
- Charles Stuart, 1st Baron Stuart de Rothesay1
- Charles Sumner1
- Charles Étienne Brasseur de Bourbourg1
- Clemente Carilli1
- D. Manning1
- Damiano Muoni1
- David McRoberts1