Former Owner
- Carlos José Gutiérrez de los Ríos y Rohan Chabot Fernán-Núñez1
- Casey Albert Wood1
- Cecil H. Clough1
- Charles Bruce, 3rd Earl of Ailesbury1
- Charles Butler1
- Charles Chardin1
- Charles Eliot Norton3
- Charles Sessler1
- Charles Seymour, 6th Duke of Somerset1
- Charles Stuart, 1st Baron Stuart de Rothesay1
- Charles Sumner1
- Charles William Dyson Perrins1
- Charles William Hamilton Sotheby2
- Charles Étienne Brasseur de Bourbourg1
- Christopher Cheney1
- Clemente Carilli1
- D. Manning1
- Damiano Muoni1
- Danii︠a︡l-sultan1
- David Eugene Smith13