Former Owner
- House of Sforza2
- Hudson Gurney2
- Hāshimī, Muḥammad ibn Muḥammad ibn ʻAbd Allāh ibn ʻAbd al-Mālik al-Ḥasanī2
- Ida M. Havens2
- Imre Hodossy2
- J. Martini2
- J. Meade Falkner2
- J. P. Gumbert2
- J. Techener2
- James & Mary Lee Tregaskis (Firm)2
- James Bowen2
- Jay Gould2
- Jean P. McClenahan2
- Jean-Baptiste Denis Guyon de Sardière2
- Joaquín Gómez de la Cortina2
- John Boyd Thacher I2
- John Cochran2
- John Egerton, 1st Earl of Bridgewater2
- John Egerton, 2nd Earl of Bridgewater2
- John Egerton, 3rd Earl of Bridgewater2