 Peter Shand Kydd was half-brother to the brother-in-law of a British peer suspected of murder who disappeared in what year?
Peter Shand Kydd: Peter Shand Kydd (23 April 1925 – 23 March 2006) was the former stepfather of Diana, Princess of Wales, and an heir to the wallpaper fortune built by his father Norman Shand Kydd (1895–1962). John Bingham, 7th Earl of Lucan: Richard John Bingham, 7th Earl of Lucan (18 December 1934 – disappeared 7 November 1974), commonly known as Lord Lucan, was a British peer suspected of murder who disappeared in 1974.
i don't know