Margaret Campbell-Preston (1916-1994) (1916–1994) Parents Mary Thorne Robert Campbell-Preston of Ardchattan Children Ann Buchanan Charles Peter Baring Andrew Michael Godfrey Baring Sir John Francis Baring, 3rd Bt. Siblings Thomas Campbell-Preston George Campbell-Preston Mary Campbell-Preston Marryel Hope Campbell-Preston Robert Mordan Thorne Campbell-Preston, 12th of Ardchattan Partners Raymond Alexander Baring William Harris, 6th Earl of Malmesbury