Former Owner
- C. Bruscoli1
- C. Duca Visconti Modrone1
- C. W. S. Dixon1
- C.B1
- C.J. Spence1
- Caesareum Societatis Jesu Collegium Viennense1
- Cambrai Cathedral1
- Cambron Abbey1
- Carl Hermann Grabauer1
- Carlo Archinto, 2nd Marquess of Parona, 3rd Count of Trainate3
- Carlo Francesco Frasconi1
- Carlo Morbio2
- Carlton Lake2
- Casey Albert Wood1
- Caspar René Gregory2
- Castel-Lodève family1
- Castelluci1
- Catherina van Drenckwaert1
- Catherine de' Medici1
- Cati S Thomas1