Former Owner
- Charles Étienne Brasseur de Bourbourg1
- Chartreuse de Montrieux-le-Vieux1
- Christian Gottlieb Schwarz1
- Christopher Pease, 2nd Baron Wardington1
- Chrétien-François II de Lamoignon1
- Claude Augustin de Cosson1
- Claude Joseph Constant Despine1
- Cloître de la Chartreuse du Val de Bénédiction1
- Cobham, H. W., 1867-1
- Coggeshall Abbey1
- Collegium Agennensis societatis Jesu (Agen, France)1
- Collegium Germanicum et Hungaricum1
- Collège Saint-Clément1
- Coppo family1
- Cornelius John Hauck1
- Count Johann Nepomuk Wilczek1
- Craven Ord1
- Cristoferus Chrewczer1
- Curt H. Reisinger1
- D. Andreas Parisino1