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]
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.