Former Owner
- James Tregaskis1
- Jan Six VII1
- Jean Jules Olinger1
- Joachim Windhag1
- Joannes Salzperg1
- Johann David Baier1
- Johannes Betrus Ravenoldus1
- Johannes Wigg1
- Johannes de Helb1
- Johannes zu Reitheim1
- Johem Spiess1
- John A. Murphy1
- John Brand1
- John Camp Williams1
- John Carter1
- John Dozier Gordan1
- John Edgar Ker1
- John Egerton, 1st Earl of Bridgewater1
- John Fletcher Hurst1
- John Gunthorpe1