Former Owner
- James Vallentin1
- Jean Lallemant1
- Jean-Baptiste Denis Guyon de Sardière1
- Jeremiah Styles1
- Jeronimus Maelens1
- Johannes de Helb1
- John Browne1
- John Fletcher Hurst1
- John Morgan1
- John Peacock1
- John Ruskin1
- John Topham1
- John Willis1
- John Wright1
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Lady Margaret Ayloffe1
- Lambertus Eerens1
- Lionel Tollemache, 4th Earl of Dysart1
- Lodovicus Saltariellus1
- Louis Bourguet1