Former Owner
- Konrad von Maurer1
- Lady Frances Bentinck1
- Lambach Abbey1
- Laurent Campagne1
- Legoué1
- Leo Olschki1
- Lisa Norris Elkins1
- Lorenzo Berdute1
- Louis Hercule Timoléon de Cossé-Brissac1
- Louis XIV of France1
- Lucien Gougy1
- Luigi Celotti1
- Luigi Serra di Cassano1
- Luis Ordoñez1
- Maggs Bros Ltd1
- Manuel John Johnson1
- Marcantonio Contarini1
- Mary Schell Collins1
- Mary Talbot, Countess of Shrewsbury1
- Mary W. T. Dickinson1