Cambridge: John Adamson, 2006, pp. 169–205 External links Official website Houghton Hall entry from The DiCamillo Companion to British & Irish Country Houses Houghton International Horse Trials Country houses in Norfolk Gardens in Norfolk Grade I listed houses Grade I listed buildings in Norfolk Robert Walpole Historic house museums in Norfolk Prime ministerial homes in the United Kingdom Walpole family Cholmondeley family Militaria 1735 establishments in England