Former Owner
- Magby, H1
- Margaret of Croy1
- Mark Lansburgh1
- Martin Schøyen1
- Melk Abbey1
- Miguel de Mayora1
- Milt Freudenheim1
- Moissac Abbey1
- Monasterio de El Paular1
- Nathaniel Sherman Bouton1
- Novalesa Abbey1
- Oliver Henry Perkins1
- Otto Ege1
- Paolino Gianfilippi1
- Paul de Berthou1
- Peterborough Central Library1
- Piero Ginori Conti1
- Pietro Antonio Maffei1
- Pietro Canal1
- Raoul Chandon de Briailles1