Former Owner
- Henry Pelham-Clinton, 4th Duke of Newcastle1
- Henry White1
- Henry Yates Thompson1
- J. & J. Leighton1
- J. Meade Falkner1
- James Ley, 1st Earl of Marlborough1
- James Tanis1
- Joachim Guerrinus de Montefegatesio1
- Johannes Abezier1
- Johannes Vivianus1
- Johannes de Helb1
- John Cochran1
- John Fletcher Hurst1
- John Henry Ellis1
- John Josias Conybeare1
- John Roland Abbey1
- Joost Ritman1
- José Esteve Juan1
- Julius Heinrich Jeidels1
- Julius de Cardelinis1