Former Owner
- John Sidney Hawkins1
- John Skerrind1
- John Stow1
- John Swyntoun1
- John Taylor1
- John Topham1
- John Wallop, Viscount Lymington3
- John Willis1
- John de Vere, 12th Earl of Oxford1
- Joost Ritman1
- Joseph Haslewood2
- Joseph Mayner1
- Josh Miller1
- Karen L. Gould3
- Karl Anton, Prince of Hohenzollern1
- Karl Leopold Strauven1
- Katherine Somerset Wyttenbach Fenwick1
- Keith Jarvis1
- Lathrop Colgate Harper2
- Laurence Claiborne Witten II1