Former Owner
- Margaret Le Seigneur1
- Margaret of Croy1
- Marguerite de Fontenay1
- Marguerite of Lorraine1
- Marie Ange-Toussaint Placide de Ferron1
- Marion Lawrence1
- Martinus Nijhoff1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Minnis, Katherine1
- Monsieur de Bel Air1
- Morot1
- N. Pauli1
- Otto Ege1
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Gottschalk1
- Peter Arrell Brown Widener II1
- Peter Le Neve1
- Petrus Hofstede1
- Petrus Jensenius1
- Petrus Ysermans1