Former Owner
- Luis Ordoñez1
- Madame Théophile Belin1
- Maggs Bros Ltd1
- Manuel John Johnson1
- Marcantonio Contarini1
- Marianne F. ???1
- Mary Schell Collins1
- Mary Talbot, Countess of Shrewsbury1
- Mary W. T. Dickinson1
- Michiel family1
- Morris Jastrow, Jr.1
- Mortimer Loeb Schiff1
- Otto Orren Fisher1
- P. Desq1
- Paolo Giovio1
- Philip Hurd1
- Philip Kerr, 11th Marquess of Lothian1
- Philippe Hurault de Cheverny1
- Philippe de Béthune1
- Phyllis Walter Goodhart Gordan1