Former Owner
- James Rathwell Page1
- James Turle1
- Jan Six VII1
- Jay Gould1
- Jean Budé1
- Jean Felix Dénie1
- Jean de Goix1
- Jeanne Govro1
- Jeanne de Goix1
- Jehanne Seigneau1
- Joachim Guerrinus de Montefegatesio1
- Joannes Hainricus Ebron zu Wildenberg1
- Johann Heinrich van Ess1
- Johannes Wigg1
- John C. Jackson1
- John Harvey Treat1
- John Roland Abbey1
- John Ruskin1
- John William Harshberger1
- Joseph François René de Kergariou1