Former Owner
- Baldassarre Boncompagni1
- Basilica of Sant'Ambrogio1
- Bertram Dobell1
- Biblioteca Bottigella1
- Birgittinessenklooster Mariënwater1
- C.J. Spence1
- Charles Edward Harris-St. John1
- Charles Eliot Norton1
- Charles Fontaine1
- Charles Porterfield Krauth1
- Charles Sessler1
- Charles William Dyson Perrins1
- Charles Étienne Brasseur de Bourbourg1
- Charles-Gilbert Morel de Vindé1
- Clarence Howard Clark, Sr.1
- Clement VII1
- Clément de Renesse-Breidbach1
- Convento di San Giusto alle Mura1
- Cyrus Adler1
- Dame Margery Byrkenhed1