Former Owner
- Jean Budé1
- Jean Marie Michel Gasparoli1
- Jean de Meyer1
- Jeanne Françoise Maclovie de Carman1
- Joannes Angelus de Crema1
- John Campbell, 1st Marquess of Breadalbane1
- John F. Fleming1
- John M Cuthbert1
- John Rolls, 1st Baron Llangattock1
- John Swyntoun1
- John William Harshberger1
- Joseph Whitney1
- José Antonio Conde1
- Juan Burgueño1
- Juan de Gayferos de Eguiraum1
- Juana I of Castile1
- Julian Burgueño1
- Julius Hess1
- Katheline Minnis1
- Laurentius van der Torqel1