see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
Wenceslaus Duchatz ad 11.1.1788 harp teacher at 8 Poland St now returned from Yorkshire / Sarah Eliza dau of Wenceslaus Duchatz & Sarah Eliza bapt 22.5.1797 St James / Sarah Duchatz age 29 buried 5.2.1802 St James / ad 1804 Duchatz harp teacher 2 Phillips Place, New Rd / Wenceslaus Duchatz = St Martin in the Fields 13.6.1803 Ann Chaplin / George s of Wenceslaw & Ann Duchatz bapt 10.9.1806 Lambeth / Ann Duchatz = 8.8.1819 St Mary Newington to William Coleman / Sarah Eliza Duchatz = Samuel Raynes 23.10.1834 St George Hanover Sq. Duchatz' landlord at 8 Poland St was presumably John Church (QV*). Miss P-t-n Harris's List 1790 was likely a fellow lodger