Former Owner
- John Topham1
- John Towneley1
- John Trotter Brockett1
- John Vyfyan1
- John Walker1
- John West, 1st Earl De La Warr1
- John William Bradley1
- John William Burns1
- John William Harshberger1
- John Willis1
- John Wright1
- John de Cinque1
- John de Vere, 12th Earl of Oxford1
- Jonathan Peckover1
- Josceline Bagot1
- Joseph Baer & Co.1
- Joseph François René de Kergariou1
- Joseph Görres1
- Joseph Halle Schaffner1
- Joseph Jekyll1