Former Owner
- Jacques Annibal Claret de La Tourrette1
- Janārdana Koṇḍadeva Gāḍagīla1
- Jean Lallemant1
- Jean-Baptiste Denis Guyon de Sardière1
- Jean-Louis Girardin de Vauvré1
- Jeremiah Styles1
- Jeronimus Maelens1
- Johann Heinrich van Ess1
- John Butlar1
- John C. Jackson1
- John Morgan1
- John Rolls, 1st Baron Llangattock1
- John Ruskin1
- John West, 1st Earl De La Warr1
- John Wright1
- Katherine Somerset Wyttenbach Fenwick1
- Kloster Rebdorf1
- Lambertus Eerens1
- Laurent Campagne1
- Legoué1