Former Owner
- Carl Alphons Geigy-Hagenbach1
- Carleton Rubira Richmond1
- Carlo Bonaparte1
- Carlo Longland1
- Carlos José Gutiérrez de los Ríos y Rohan Chabot Fernán-Núñez1
- Carthusian monastery, Herne1
- Castel-Lodève family1
- Castelluci1
- Catharine Wisser1
- Catherina van Drenckwaert1
- Catherine Barton1
- Catherine de' Medici1
- Cati S Thomas1
- Cecil Deedes1
- Cecil Dunn Gardner1
- Cecil Mallaby Firth1
- Chacère Family1
- Champmol1
- Charles Alexander de Cosson1
- Charles Archibald Stonehill1