see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
Robert Hamilton ratebooks 9 Poland St 1781 / three subsequent tenants of 9 Poland St were upholders or cabinet makers, essentially the same trade making and auctioning furniture so this may have ben the Robert Hamilton = St James 23.3.1761 Ann Davidson botp by banns wits Alexr Davidson, Robt Forbes / Margaret dau of Robt & Ann Hamilton born Silver St, St James bapt 18.5.1770 / George sof Robt & Ann Hamilton born Brewer St, St James bapt 23.8.1772 / Robert Hamilton cabinet maker Brewer St voted Percy & Clinton 1774 / Robert Hamilton cabinet maker St James took apprs George Macklean 1773 Robt Pankhurst 1775 / perhaps the Robert Hamilton buried 13.9.1787 Westminster or the Robert Hamilton bur 25.7.1790 St Marylebone (probably not the Robert Hamilton carpenter of St Martin in the Fields who voted from Off Alley 1788 & 1790 & from Villiers St 1802)