Former Owner
- Luini, Pacifico (Franciscan priest), active 19th century1
- Lyon Cathedral1
- Mademoiselle de Malberghe1
- Maggs Bros Ltd1
- Manuel Fernández del Castillo1
- Margaret of Croy1
- Mark Lansburgh1
- Mary Bloch1
- Mary Schell Collins1
- Mary Talbot, Countess of Shrewsbury1
- Michel de Léon1
- Mirmellus Arnandi1
- Moissac Abbey1
- Mortimer Loeb Schiff1
- Morton Davis Mitchell1
- Muriel Agnes Fry1
- Nathaniel Sherman Bouton1
- Newman F. McGirr1
- Orlandus de Fatiis1
- Otto Ege1