see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
SunFire 1785 Lieut Gen Thomas Clarke 57 Poland St / Boyles Court Guide 1793 & 1794 Gen Clarke 57 Poland St / 13.11.1792 & 5.4.1793 Bedford Archives R3 1198 & 1391 letters from General Clarke, Poland St to Daniel Beaumont, Duke of Bedford's steward / Boyle's Court Guide 1799 Gen. Thomas Clarke 5 St Albans St & Godmanchester nr Huntingdon / will PCC 1799 dated 25.9.1799 General Thomas Clarke of St Alban's St, St James mentioned Joyner Becher of Wokingham, Berks (who had married Sarah Harris 1763 Wokingham,bankrupt 1778 maltster of Wokingham cert 1780) and their daughter Catherine Becher, his nephew Charles Thomas Clarke Esq, and residue to Hon Vere Pawlett / St James Chronicle 7.11.1799 Died Saturday se'nnight at Bath, General Thomas Clarke, Colonel of the 30th regiment of foot