Former Owner
- House of Colonna1
- House of Sforza1
- Hubert Palmer Greville1
- I. I. Zur-Mühlen1
- Isaac ha-Rofe ben Moses ibn Elezar1
- J. E. Schulte1
- Jacques Rosenthal1
- James Dyer1
- James Ellsworth1
- James Elwin Millard1
- Jean Guillaume Germain1
- Jeannette Dwight Bliss1
- Joaquín Gómez de la Cortina1
- Johann Egolph1
- Johann von Firmian1
- Johannes Wesbach1
- John Harvey Treat1
- John Hope, 1st Marquess of Linlithgow1
- John Jalkyn1
- John Towneley1