Former Owner
- John Ruskin1
- John Selden1
- John Shirley1
- John Stow1
- John Swyntoun1
- John Willis1
- John de Vere, 12th Earl of Oxford1
- Joseph L. Lilly1
- Joseph Mayner1
- K. B. Starkie1
- Latham family1
- Laurence Vaux1
- Law Society1
- Lionel Tollemache, 4th Earl of Dysart1
- Little family1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Madeleine Cosman1
- Mariota Lyle1
- Mark Lansburgh1
- Mary Stanley, Countess of Derby1