Former Owner
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Loftus Bland1
- Louis Charles Karpinski1
- Louis II, Count of Flanders1
- Lucien Magne1
- Lucrezio Palladio degli Olivi1
- Luigi Arrigoni1
- Luigi Celotti1
- Luigi Clerici1
- Luis Mayora1
- Léon Gruel1
- Léon Techener1
- Magby, H1
- Marchese Linterno1
- Margaret of Croy1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Marie Cleophe de Sollario1
- Marie Thomas1
- Marie de Albano1