If you don't have the family in the Censuses the refs are
1841 HO107/73/16/F14 Hall Street Soham
1851 HO107/1763/F241/P21 Hall Street, Soham
1861 RG09/1036/F6/p8 West Side Hall Street Soham
Death
Edward Staples Mar 1865 Newmarket 3b 412
Probate proved 11 April 1865 on Edward Staples Gentleman of Hall Street, Soham. Estate under £200. Executors Edward Staples, Soham, Gent and William Malden Staples, Chippenham, Innkeeper, his sons.
Birth
Edward Staples born Soham 19 October 1790, baptised 19 January 1791 parents Ellis Staples and Mary Horsley
Ann Malden born 18 November 1800, baptised 12 December 1800 parents Henry Malden and Ann Gawtrey
I think that gives you the Horsley connection.
Emeltee