Former Owner
- Charles Seymour, 6th Duke of Somerset1
- Charles Singer1
- Charles Stephen Ascherson1
- Charles Stuart, 1st Baron Stuart de Rothesay1
- Charles-Gilbert Morel de Vindé1
- Chartreuse Saint-Sixte de Rettel1
- Claude Augustin de Cosson1
- Clemente Carilli1
- Collegium Germanicum et Hungaricum1
- Count Johann Nepomuk Wilczek1
- Cristoferus Chrewczer1
- D. Andreas Parisino1
- Damiano Muoni1
- Daniel Itzig1
- David McRoberts1
- David Werner Amram1
- Dean Putnam Lockwood1
- Diego de Ayala1
- Dionysiĭ Vasilevich1
- Donaueschingen court library1