Former Owner
- C. Duca Visconti Modrone1
- C. W. S. Dixon1
- Caspar René Gregory1
- Cati S Thomas1
- Cecil Mallaby Firth1
- Charles Butler1
- Charles Deane1
- Charles E. Roseman Jr.1
- Charles Ede1
- Charles Lenormand du Coudray1
- Charles William Dyson Perrins1
- Charlier de Namur1
- Christiania Kathedralskoles Bibliothek1
- Château d'Anet1
- Cistercian Abbey of Beaupré1
- Clarence S. Bement1
- Clement XI1
- Cloître de la Chartreuse du Val de Bénédiction1
- Coggeshall Abbey1
- Constance de Foix1