Former Owner
- London School of Jewish Studies1
- Luigi Celotti1
- Luigi Clerici1
- Luigi Cora1
- Luigi Serra di Cassano1
- M. Favia del Core1
- Magby, H1
- Maria Ludovica Favia del Core Borromeo1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Matteo Barresi1
- Mazliah Finzi1
- Michel Chasles1
- Monastery at San Gregorio al Celio1
- Moritz Dessauer1
- Nathaniel Sherman Bouton1
- Nicholai von Bodeck1
- Novalesa Abbey1
- Noël Pinelli1
- Otto Ege1