Former Owner
- Caesareum Societatis Jesu Collegium Viennense1
- Cambrai Cathedral1
- Cambron Abbey1
- Camilla Doria Pallavicini1
- Carlo Bonaparte1
- Caspar René Gregory1
- Castel-Lodève family1
- Castelluci1
- Catharine Wisser1
- Catherine Barton1
- Catherine Conduitt1
- Catherine de' Medici1
- Cati S Thomas1
- Cecil Deedes1
- Cecil Dunn Gardner1
- Cecil Mallaby Firth1
- Chacère Family1
- Champmol1
- Charles Alexander de Cosson1
- Charles Archibald Stonehill1