Former Owner
- Mariota Lyle1
- Mark Lansburgh1
- Martin Breslauer1
- Martin Schøyen1
- Martinus Nijhoff1
- Marvin-L. Colker1
- Mary Elizabeth Holte1
- Mary Lusher1
- Mary Stanley, Countess of Derby1
- Mary W. T. Dickinson7
- Mary, Queen of Scots1
- Marymount College, Tarrytown4
- Mathias Schurer1
- Matteo Barresi1
- Matteo Luigi Canonici15
- Matthew Bloxam1
- Matthew Simpson Parkhurst1
- Matthias Corvinus1
- Maurice Johnson1
- Maurice Kann1