by 1871 - 1903
Louisa Caroline Stewart-Mackenzie Baring, baroness Ashburton, 1827 - 1903 (Grange Park, Hampshire, England), by inheritance to her grandson, Spencer Douglas Compton, 1903.
1903 - 1915
Lord Spencer Douglas Compton, 1893 - 1915 (Castle Ashby, Northamptonshire, England), by inheritance to his elder brother, William Bingham Compton, 1915.
1915 - 1978
William Bingham Compton, sixth marquess of Northampton, 1885 - 1978 (Castle Ashby, Northamptonshire, England), by inheritance to his son, Spencer Douglas David Compton, 1978.
1978 - 1985
Spencer Douglas David Compton, seventh marquess of Northampton, born 1946 (Castle Ashby, Northamptonshire, England) [sold, Northampton sale, Christie's, London, April 18, 1985, lot 16, to the J. Paul Getty Museum.]