Former Owner
- M. De La Tour1
- M. Louise Stowell1
- Maksymilian Mielzynski1
- Marcantonio Contarini1
- Marcela Gabriela1
- Marco da Bologna1
- Margaret F. Woodward1
- Margaret Le Seigneur1
- Marguerite de Fontenay1
- Marguerite of Lorraine1
- Maria Riddell1
- Marie Ange-Toussaint Placide de Ferron1
- Marion Lawrence1
- Mariota Lyle1
- Martinus Nijhoff1
- Mary Schell Collins1
- Mary, Queen of Scots1
- Matthias Corvinus1
- Maurice Kann1
- Menno Hertzberger1