see Batemans Buildings in London Addresses dataset
James Massey ratebooks 5 Batemans Bldgs 1774 / SunFire 1780 James Massey tailor Hollis St Cavendish Sq / Land Tax 1780-84 James Massey 8 Holles St / Old Bailey 1.7.1795 James Massey rented a house in - St, Cavendish Sq / will PCC 1806 James Massey of St Marylebone gent (seen will - of Queen Charlotte Row probably different person) / there was also a grocer at Knightsbridge, a butcher in Aldgate High St and a baker in St Martins Lane, all called James Massey c. 1784