Margaret Drummond Peerage person ID=12535 (1917–1987) Parents Isobella Crammond William Drummond of Balloch Children John Lyon, 4th of Cossins James Campbell George Lyon Colin Campbell, 3rd of Glenlyon Hugh Campbell Siblings Egidia Drummond George Drummond, 4th of Balloch Dorothea Drummond Partners John Campbell, 2nd of Murthlie John Lyon, 3rd of Cossins Robert Spittell Duncan Campbell, 2nd of Glenlyon