Former Owner
- James H. Stewart1
- James Lyell1
- James R. Herbert Boone1
- James Turle1
- Joannes Hainricus Ebron zu Wildenberg1
- Johann Heinrich van Ess1
- John Bigham, 1st Viscount Mersey1
- John Singer Sargent1
- Joseph Barrois1
- Julius Heinrich Jeidels1
- Kartause Erfurt1
- Lambach Abbey1
- Lane Theological Seminary1
- Laurence Kirby1
- Leo Olschki1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Louis Charles Karpinski1
- Lucrezio Palladio degli Olivi1
- Luigi Clerici1
- Luis Mayora1