Former Owner
- Johann Heinrich von Speyr-Passavant1
- Johannes Betrus Ravenoldus1
- John Alexander Stewart1
- John C. Jackson1
- John Roland Abbey1
- John Ruskin1
- John Sotheby1
- John Ward, 1st Earl of Dudley1
- Juan Burgueño1
- Julian Burgueño1
- Jérôme Pichon1
- Karl Hermann Berendt1
- L. Paganthus1
- Lambach Abbey1
- Louis-Jean-Nicolas Monmerqué1
- Ludovico Settala1
- Madeleine Cosman1
- Malvezzi de' Medici1
- Markus Fugger1
- Mary Augusta Strachey1