Former Owner
- Marie Cleophe de Sollario1
- Marie Thomas1
- Marie de Albano1
- Marienstiftsgymnasium1
- Marilyn Carbonell1
- Mario Maffei1
- Marion H. Gottfried1
- Marion Lawrence1
- Mariota Lyle1
- Mark Augspürger1
- Mark Sittich von Hohenems Altemps1
- Markus Fugger1
- Marsden J. Perry1
- Martin Breslauer1
- Martin of Aragon1
- Martinus Nijhoff1
- Mary Augusta Strachey1
- Mary Bloch1
- Mary Elizabeth Holte1
- Mary Schell Collins1