see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
John Martin ratebooks 51 Poland St 1782-4 / SunFire 1781 Joseph Francis Martin Poland St gent his wife a mantua maker / 15.9.1784 Magdalen Martin witness at Old Bailey husband Joseph Francis Martin, married 12 years, he lived in Poland St, but was in the country the last 2 months or better / Joseph Martin = St James 23.4.1769 Magdalen Polet / children bapt St James of Joseph Francis & Magdalen Martin, Thomas 30.6.1777, Frances Charlotte Wilhelmina 10.11.1779 Thomas William Catherinus 29.9.1781