The land was originally known as Rous's Buildings, probably in reference to Joseph Rous who followed John Duffield as lessee of the Wells Estate, and was originally a much larger area that went as far as
Well Road and Christchurch Hill and included three other houses. one of whom was James Marshall, who lived at Cannon Hall in the 1870s. Sarah Holford, a widow, leased the house from at least 1752, and probably from as early as 1745, as a print was published of the Long Room "from Mrs. Holford's garden" in that year.
physician-in-ordinary to King George III.
Sir James Cosmo Melvill (1792–1861), of the
East India Company, bought Cannon Hall around 1838, the year in which he became chief secretary of the company. The cannons which he placed around the site gave it the name Cannon Hall from then on. The house has a
blue plaque in his memory, erected by the
Greater London Council. The author Daphne du Maurier (1907–1989) was aged about 9 when her father bought the house, and she grew up there with her sisters Angela (1904–2002) and Jeanne (1911–1996). File:Sir Noah Thomas (1720-92).jpg|Sir Noah Thomas by
George Romney, 1781 File:James Cosmo Melvill.jpg|James Cosmo Melvill by Eton Upton Ellis, c. 1853 File:GeraldDM1205 228x390.jpg|Gerald du Maurier ==In film==