Former Owner
- Michael Wodhull1
- Michaeliskonvent1
- Mikhail Golitsyn1
- Millard Meiss1
- Molin1
- Monasterium sanctorum quadraginta martyrum (Treviso Italy)1
- Murray Anthony Potter1
- Muḥammad Anīs Ṭālawī1
- Niccolò Albergati1
- Nicolai Briganti1
- Nicolas Antoine Labbey de Billy1
- Nicolaus de Monte Murro1
- Octave Chavaillor1
- Orlandus de Fatiis1
- Owen D. Young1
- P. Pigeot1
- Paolo Guerrini1
- Paul Joseph Sachs1
- Paulus de Graecus1
- Pazzi family1