Former Owner
- John Church1
- John Edgar Ker1
- John Fenn1
- John Hinely1
- John Lee1
- John Leeche1
- John Patteson1
- John Roland Abbey1
- John Ruskin1
- John Thomas Beer1
- John William Harshberger1
- Juan Burgueño1
- Julian Burgueño1
- Kloster Rebdorf1
- Lambach Abbey1
- Laurence William Hodson1
- Lionel Tollemache, 4th Earl of Dysart1
- Llanthony Priory1
- Louis César de La Baume Le Blanc1
- Louis N. Cassett1