Former Owner
- Charles Singer1
- Charles Stephen Ascherson1
- Charles Stuart, 1st Baron Stuart de Rothesay1
- Charles-Gilbert Morel de Vindé1
- Chartreuse Saint-Sixte de Rettel1
- Chintamani Misra1
- Christopher Pease, 2nd Baron Wardington1
- Cintāmaṇabhaṭṭa Guṇe1
- Claude Augustin de Cosson1
- Claude Bourelier1
- Clemente Carilli1
- Cobham, H. W., 1867-1
- Collegium Germanicum et Hungaricum1
- Cornelius John Hauck1
- Count Johann Nepomuk Wilczek1
- Cox Macro1
- Cristoferus Chrewczer1
- D. Andreas Parisino1
- Damiano Muoni1
- Daniel Itzig1