Former Owner
- Ignatius Molitor1
- James C. Byrne1
- James Elwin Millard1
- James Halliwell-Phillipps1
- James Lyell1
- James Russell Lowell1
- Jean Jules Olinger1
- Joachim Windhag1
- Joannes Salzperg1
- Johann Egolph1
- Johannes Abezier1
- Johannes de Helb1
- Johem Spiess1
- John A. Murphy1
- John Fletcher Hurst1
- John Harvey Treat1
- John Read Dore1
- John Wright1
- Jonathan Peckover1
- Joseph Ernst Koch-Sternfeld1