Former Owner
- Marie de Bretagne d'Avaugour1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marie-François Duchesne de Beaumanoir3
- Marienstiftsgymnasium1
- Marilyn Carbonell2
- Marino Grimani1
- Mario Maffei1
- Marion H. Gottfried1
- Marion Lawrence1
- Mark Lansburgh1
- Martin J. Cooper4
- Martin Picker3
- Martin Schøyen8
- Martin of Aragon1
- Marvin-L. Colker1
- Mary Augusta Strachey1
- Mary Bloch1
- Mary Elizabeth Holte1
- Mary Lacaita2
- Mary Lusher1