Former Owner
- Joannes Hainricus Ebron zu Wildenberg1
- John A. Savage Jr.1
- John Bigham, 1st Viscount Mersey1
- John Bulkeley1
- John D. McKenna1
- John F. Fleming1
- John M Cuthbert1
- John McRay1
- John Morgan1
- John Ruskin1
- John Savile1
- Joseph L. Lilly1
- Joseph Whitney1
- Joseph-Félix Allard1
- José Antonio Conde1
- Juan de Gayferos de Eguiraum1
- Julius Hess1
- Jérôme Bignon1
- Kenneth Hyde1
- Lane Theological Seminary1