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5, St James's Square (anciently Wentworth House) is a Grade II* listed historic townhouse in London, England, built 1748–51 by William Wentworth, 2nd Earl of Strafford (1722–1791) to the design of Matthew Brettingham the Elder.^[1]^[2] It remained the London residence of the descendants of his sister until after 1968,^[3] and in 1984 was the site of the "Libyan Peoples' Bureau" from which shots were fired which caused the murder of Yvonne Fletcher.

Residents

The following persons were resident in successive houses on the site:^[4]

1676–1679 Henry Hyde, 2nd Earl of Clarendon (Lord Privy Seal, Lord Lieutenant of Ireland, &c.)
1680–1691 Elizabeth, Countess of Thanet
1692Meinhardt de Schonberg, Duke of Leinster, K.G. (Commander-in-Chief)
1693–1695 Charles Lennox, 1st Duke of Richmond, K.G. (Master of the Horse)
1696 Charles Talbot, 1st Duke of Shrewsbury, K.G. (Lord Treasurer, &c. )
1697–1699 Edward Coke
1700–1701 Charles Beauclerk, 1st Duke of St Albans, K.G. (Captain of the Bodyguard)
1702 Lady Katherine O'Brien
1703 Empty
1704–1711 Sir Richard Child, 3rd Baronet

Wentworth & Byng families

1712–1739 Thomas Wentworth, 1st Earl of Strafford (1672–1739), K.G. (Ambassador at Berlin, First Lord of the Admiralty, &c.)
1740–1791 William Wentworth, 2nd Earl of Strafford (1722–1791), only son, who pulled down the old house and in 1748–51 rebuilt the surviving structure to the design of Brettingham. He married Lady Anne Campbell (c. 1715 – 1785), a daughter of John Campbell, 2nd Duke of Argyll, but died without progeny when the heir to his titles, but not to his estates, was his first cousin's son, Frederick Wentworth, 3rd Earl of Strafford.
1792–1794 Rt. Hon. Thomas Conolly (1737–1803), of Stretton Hall, Staffordshire and of Castletown House, County Kildare, Ireland, MP, son of Lady Anne Wentworth, sister of William Wentworth, 2nd Earl of Strafford (1722-1791). He was the grandson and eventual heir of William Conolly (1662–1729), of Castletown House, Speaker of the Irish House of Commons, reputed to be the wealthiest man in Ireland. He married Lady Louisa Lennox, a daughter of Charles Lennox, 2nd Duke of Richmond, but died without progeny.^[5]
1795–1847 George Byng (1764–1847), MP, of Wrotham Park and 5 St James's Square, son of Anne Conolly, sister of Thomas Conolly. Died without progeny.
1848–1854 Mrs. Byng, widow of George Byng (Harriet Montgomery, a daughter of Sir William Montgomerie, 1st Baronet, of Macbie Hill, Peebles,)^[6]
1855–1886 George Stevens Byng, 2nd Earl of Strafford (1806–1886) of the new creation, nephew and heir of George Byng (1764-1847) of Wrotham Park.
1887– George Henry Charles Byng, 3rd Earl of Strafford (1830–1898), eldest son.
Henry William John Byng, 4th Earl of Strafford (1831–1899), brother.
Rev. Francis Edmund Cecil Byng, 5th Earl of Strafford (1835–1918), brother.
Edmund Henry Byng, 6th Earl of Strafford (1861–1951), son. He died without male progeny, leaving two daughters and co-heiresses. His titles, but not his estates, were inherited by his nephew Robert Cecil Byng, 7th Earl of Strafford (1904–1984).
Lady (Florence) Elizabeth Alice Byng (1897–1987), eldest daughter, who was bequeathed by her father his two principal properties, Wrotham Park in Hertfordshire and 5, St James's Square. In 1928 she married Michael William M. Lafone^[7] of Kenya,^[8] whom she divorced in 1931, having had issue Julian Michael Edmund Lafone (born 1928).
Julian Michael Edmund Lafone (born 1928), a barrister who in 1952 changed his surname by deed-poll to his matronymic "Byng", following a similar action by his mother following her divorce in 1931 and paternal inheritance in 1951.^[9]^[10] He attempted to evict his mother from Wrotham Park in a law suit presided over in the high court by Lord Oliver of Aylmerton.^[11] He inherited Wrotham Park and 5, St James's Square, and sold the latter, some time after 1968.^[12]

References

^ Historic England. "Wentworth House (1264938)". National Heritage List for England. Retrieved 13 May 2018.
^ "The Building". 5 St James's Square. 29 September 2015. Retrieved 10 January 2022.
^ Montague-Smith, P.W. (ed.), Debrett's Peerage, Baronetage, Knightage and Companionage, Kelly's Directories Ltd, Kingston-upon-Thames, 1968, p.1060, residence of Julian Byng (born Lafone), son and heir of Lady Elizabeth Byng, eldest daughter and co-heiress of the 6th Earl of Strafford.
^ Up to 1887 as listed in:Dasent, Arthur Irwin (1895). The history of St. James's square and the foundation of the West end of London, with a glimpse of Whitehall in the reign of Charles the Second. London and New York, Macmillan and co. Retrieved 10 January 2022.
^ "Strafford, Earl of (GB, 1711 - 1799)". Cracroft's Peerage. 16 March 2012. Archived from the original on 16 March 2012. Retrieved 10 January 2022.
^ "BYNG, George (1764-1847), of Wrotham Park and 5 St. James's Square, Mdx. | History of Parliament Online". www.historyofparliamentonline.org. Retrieved 10 January 2022.
^ Montague-Smith, P.W. (ed.), Debrett's Peerage, Baronetage, Knightage and Companionage, Kelly's Directories Ltd, Kingston-upon-Thames, 1968, p.1060
^ A member of Kenya's Happy Valley set (Nicholls, Christine Stephanie (2005). Red Strangers: The White Tribe of Kenya. Timewell Press. p. 2000. ISBN 978-1-85725-206-4. Retrieved 10 January 2022.), described as a "Kenyan bad-hat", in A sleuth in Happy Valley, The Spectator Archive, 20 Nov. 1982, p.22, Richard West's review of White Mischief by James Fox "A sleuth in Happy Valley » » The Spectator Archive". The Spectator Archive. 20 November 1982. Retrieved 10 January 2022.
^ "data.pdf" (PDF). The London Gazette. 22 April 1952. p. 2198. Retrieved 10 January 2022.
^ Debrett's, 1968, p.1060
^ Obituary of Lord Oliver of Aylmerton, Daily Telegraph, 23 Oct 2007
^ Montague-Smith, P.W. (ed.), Debrett's Peerage, Baronetage, Knightage and Companionage, Kelly's Directories Ltd, Kingston-upon-Thames, 1968, p.1060, Julian Byng's address given as "5, St James's Square"