see Poland Street 1 to 9 & 49 to 62 in London Addresses dataset
Ratebooks 4 Poland St 1780 Agnes Murray 1781-4 Mrs Mackie. See Murray, Edward Augustus. Agnes Mackie was his housekeeper and a spinster but apparently went by his surname in 1780. Her sister Mary wife of William Benson had four children to whom, along with Agnes Mackie, Edward Augustus Murray left his property. Their baptisms were Charles Benson 17.8.1785 St Saviour Denmark Park / William Benson bach = St Marylebone 27.10.1789 Mary Mackay sp botp / James s of William and Mary Benson bapt St Anne Soho 3.12.1789 / Edward Augustus Murray Benson bapt 19.8.1792 St Saviour Denmark Park of Wm B gent & Mary / Mary Benson bapt 6.12.1795 St Saviour Denmark Park d of Wm B porter & Mary. These were the four named in Edward Augustus Murray's will except Mary was called Mary Ann and a Charlotte Benson was also mentioned. Mary Benson wife of William Benson of 3 White House Court Southwark took administration in 1821 of the goods of her sister Agnes Mackay of Charlotte St, Rathbone Place who died December 1804, sworn under £300 on the bonds of William Benson servant and Edward Benson of 203 Bermondsey St, gent. According to an Ancestry user-submitted tree Edward Augustus Murray Benson died in Australia in 1857