Former Owner
- Loftus Bland1
- Lorenzo de Olivera1
- Ludovico Settala1
- Luigi Serra di Cassano1
- Madeleine Cosman1
- Manoel S. Pinto1
- Mark Augspürger1
- Mark Lansburgh1
- Markus Fugger1
- Mary Augusta Strachey1
- Mary Schell Collins1
- Mary W. T. Dickinson1
- Matteo Luigi Canonici1
- Matthaeus Lupin1
- Maurilio Morazio1
- Maximilian Henry of Bavaria1
- Melchior Daniel Neubronner1
- Michiel family1
- Moritz Joseph Johann von Dietrichstein1
- Mortimer Frank1