Former Owner
- John Mason Neale1
- John McRay1
- John Milne Buckie1
- John Morgan1
- John Patrick Auguste Madden2
- John Peacock1
- John Read Dore1
- John Reiner5
- John Roland Abbey2
- John Rolls, 1st Baron Llangattock3
- John Rolls, 2nd Baron Llangattock1
- John Rushout, 2nd Baron Northwick1
- John Ruskin7
- John Savile1
- John Shelton Lawrence1
- John Sidney Hawkins1
- John Singer Sargent1
- John Skerrind1
- John Stanley, 18th Earl of Derby1
- John Stirton1