He was s of Herbert Kelvin WALLACE of Sussex. He m 1969 Janet Elisabeth b 1940 d of Sir Ronald Archibald ORR EWING 5th Bt 1912-2002 and Marion Hester 1914-97 d of Sir Donald Walter CAMERON 1876-1951 chief of that Scots gentry family of Lochiel and Lady Hermione Emily GRAHAM 1882-1978 d of 5th Duke of MONTROSE 1852-1925 and Violet Hermione GBE 1854-1940 d of Sir Frederick Ulric GRAHAM 3rd Bt 1820-88 of Netherby and Lady Jane Hermione ST MAUR 1832-1909 d of 12th Duke of SOMERSET 1804-85 etc, and had two sons and a dau.