She was d of Maj Kenneth Arthur SETH-SMITH 1897-1978 scion of that gentry family and his 1st w Doris Roberta 1895-1974 d of Lt-Col Wilson McKERGOW OBE TD 1866-1947 sometime head of that gentry family of Twineham Grange and Jane Elizabeth Madeline (Madge) BAKER 1876-1969. She m 1st 1948 (div 1956) as his 1st w Charles Stewart McDonnell 1921-2008 s of Ernest Charles William VANE-TEMPEST 1894-1957 (gt gs of 3rd Marquess of LONDONDERRY 1778-1854) and Aline Mary Loftus 1897-1967 d of Loftus ST GEORGE 1858-1952 (gs of Sir Richard Bligh ST GEORGE 2nd Bt 1765-1851) and Marguerite Isabel Clifford 1871-1956 d of Clifford Fortescue BORRER 1841-84 scion of that gentry family (now ORLEBAR of Pakyns Manor) and Christina Sophia 1844-1909 d of Charles Kaye FRESHFIELD MP 1812-91 scion of that gentry family of Wych Cross Place, and had a son and a dau. She m 2nd 1961 as his 2nd w the 2nd Viscount BUCKMASTER. She m 3rd 1982 as his 2nd w Maj Roderick Edward FAURE WALKER 1914-2002 scion of that gentry family of Sandon Bury.