Former Owner
- Caesareum Societatis Jesu Collegium Viennense1
- Carleton Rubira Richmond1
- Cecil Deedes1
- Charles Alexander de Cosson1
- Charles D. Humberd1
- Charles E. Roseman Jr.1
- Charles Hurleston1
- Charles Kothen1
- Charles Louis Adelaïde Henri Matheron Curnieu1
- Charles Marriette1
- Charles Seymour, 6th Duke of Somerset1
- Charles Singer1
- Charles Stephen Ascherson1
- Charles-Gilbert Morel de Vindé1
- Clarence S. Bement1
- Claude Augustin de Cosson1
- Clemente Carilli1
- Collegium Germanicum et Hungaricum1
- Count Johann Nepomuk Wilczek1
- Cristoferus Chrewczer1