Former Owner
- Camillo Riccio1
- Carl Alphons Geigy-Hagenbach1
- Carleton Rubira Richmond1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate1
- Carlo Longland1
- Carlos José Gutiérrez de los Ríos y Rohan Chabot Fernán-Núñez1
- Caspar René Gregory1
- Cecil Deedes1
- Charles Augustus Stoddard1
- Charles Edwin Puckett1
- Charles Fairfax Murray1
- Charles Golding1
- Charles Joseph Harford1
- Charles Seymour, 6th Duke of Somerset1
- Charles Stephen Ascherson1
- Chintamani Misra1
- Cintāmaṇabhaṭṭa Guṇe1
- Claude Bourelier1
- Collegium Germanicum et Hungaricum1
- Corp. Thomas Tay1