Former Owner
- Jean Leclerc1
- John Caryll1
- John Gunthorpe1
- John Holt1
- John Josias Conybeare1
- John Lee1
- John Lumley, 1st Baron Lumley1
- John Pery1
- John Roland Abbey1
- John Ruskin1
- John Shirley1
- John Sidney Hawkins1
- John Stow1
- John Taylor1
- John de Vere, 12th Earl of Oxford1
- Joseph Jekyll1
- Justin MacCarthy Reagh1
- Laurence Vaux1
- Law Society1
- Long Island Historical Society, Maine1