see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
Captain David Collins of Marines DNB 1756-1810 signed the preface to his book at 6 Poland St 1797 / Nat Arch HO 42/41/82 f246-7 letter from Capt David Collins 6 Poland St to Home Office 29.11.1797 / . Andrew Staley (QV*) was probably the owner-occupier of the house at that time