Former Owner
- Melk Abbey1
- Michel Chasles1
- Michel de Léon1
- Monasterio de El Paular1
- Nicolas Fowle1
- Oliver Henry Perkins1
- Oswald Carl Friedrich von Seilern und Aspang1
- Otto Ege1
- Otto Orren Fisher1
- Otto Vollbehr1
- Pangracius Chrewczer1
- Paolo Gallo1
- Paul Grinke1
- Petrus Giraud1
- Philip Kerr, 11th Marquess of Lothian1
- Philip Robinson1
- Piero Ginori Conti1
- Pierre Fraenkel1
- Pierre Gorman1
- Pietro Civaleri1