Former Owner
- Linda Ehrsam Voigts1
- Lionel Tollemache, 4th Earl of Dysart1
- M. Lee1
- Madeleine Cosman1
- Mantell1
- Margaret Barclay Wilson1
- Marion H. Gottfried1
- Mariota Lyle1
- Marsden J. Perry1
- Martin Schøyen1
- Marvin-L. Colker1
- Mary Stanley, Countess of Derby1
- Mary Talbot, Countess of Shrewsbury1
- Mary W. T. Dickinson1
- Matthew Bloxam1
- Maurice Johnson1
- Michael Greenberg1
- Miriam Lutcher Stark1
- Miss Gostling1
- Moor of Ireton1