Former Owner
- John Ruskin1
- John Selden1
- John Shirley1
- John Stow1
- John Swyntoun1
- John Towneley2
- John Willis1
- John de Vere, 12th Earl of Oxford1
- Joseph Halle Schaffner1
- Joseph L. Lilly1
- Joseph Mayner1
- Joseph Neeld1
- K. B. Starkie1
- Latham family1
- Laurence Vaux1
- Law Society1
- Lawrence J. Schoenberg3
- Leicester Harmsworth2
- Leigh Baker1
- Lionel Tollemache, 4th Earl of Dysart1