Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex.
St George Hanover Square pub history index
Pimlico road is earlier named Grosvenor row until at least 1869.
A listing of historical London public houses, Taverns, Inns, Beer Houses and Hotels in St George Hanover Square; and includes such areas of London as Knightsbridge, Mayfair and Pimlico.
Residents at this address
July 1798/John Jones, the Nell Gwyn, Grosvenor Row, Chelsea, victualler/../../Sun
Fire Insurance records at the LMA
May 1804/Charles Hesketh, the Nell Gwynn, Grosvenor Row, Chelsea, victualler/../../Sun
Fire Insurance records at the LMA
1805/Charles Hesketh, the Nell Gwynn, Grosvenor row, Chelsea/../../Holdens
Directory
August 1808/John Thomas Forsyth, the Nell Gwyn, Grosvenor Row, Chelsea,
victualler/../../Sun Fire Insurance records at the LMA
1823-24/John Springett, Nell Gwynn, Grosvenor row/../../Pigots Directory
1826/Jane Holt/../../../Middlesex Directory
1831/Thomas Thomson, Nell Gwyn, Chelsea, 1 guinea/../../Licensed Victuallers Association
1833-34/Thomas Thompson, Nell Gwynne, 1 Grosvenor row, Pimlico/../../Pigots
Directory
1839/William Watson, Nell Gwynne, 1 Grosvenor row, Pimlico/../../Pigots
Directory
1841/William Watson, Nell Gwynne, 1 Grosvenor row, Pimlico/../../Post Office
Directory
1843/William Watson, Nell Gwynne, 1 Grosvenor row, Pimlico/../../Kellys
Directory
1848/William Watson/../../../Post Office Directory
1851/William Watson/../../../Kellys Directory
1856/William Watson/../../../Post Office Directory
May 1866/Sarah Maria McVicker/Outgoing Licensee/../../Era
May 1866/Peter McVicker, her husband/Incoming Licensee/../../Era
1867/Peter McVicker/../../../Licensed Victuallers Association
1869/Peter McVicker/../../../Post Office Directory
1881/Sarah M MvVicker/Licensed Victualler, Widow/51/St Saviours Southwark,
Middlesex/Census
1881/John S Trott/Son, Archt Draughtsman/23/St George, Middlesex/Census
1881/Fredk W Trott/Son/19/St George, Middlesex/Census
1881/Sarah M Trott/Daughter/17/St George, Middlesex/Census
1881/Peter R C McVicker/Son/8/St George, Middlesex/Census
1881/Maria Cole/Aunt/70/Staines, Middlesex/Census
1881/Janet E Hall/Barmaid/24/Chelsea, Middlesex/Census
1881/Michael Lynch/Potman/26/St George, Middlesex/Census
1881/Louisa Rolph/General Servant/19/Fulbourn, Cambridge/Census
1882/Mrs S M MvVicker/../../../Post Office Directory
1891/Mrs Sarah Maria McVicker/../../../Post Office Directory