Former Owner
- Jón Þorstensson1
- Katherine Somerset Wyttenbach Fenwick1
- Konrad von Maurer1
- Lady Frances Bentinck1
- Lajos Graf Apponyi de Nagy-Appony1
- Lambach Abbey1
- Laurence William Hodson1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Lorenzo Berdute1
- Louis César de La Baume Le Blanc1
- Louis Hercule Timoléon de Cossé-Brissac1
- Lucien Gougy1
- Mannucci family1
- Marcianus F. Rossi1
- Mario Maffei1
- Mark Lansburgh1
- Mary Schell Collins1
- Matthias Corvinus1
- Melk Abbey1
- Merlemont family1