Mary McCorquodale (1932-2025) (1932–2025) Parents Barbara Helen de Knoop Norman McCorquodale Children Diana Bowes-Lyon Elizabeth Bowes-Lyon Michael Bowes-Lyon, 18th Earl of Strathmore and Kinghorne Siblings Helen McCorquodale Euan McCorquodale Partners Fergus Bowes-Lyon, 17th Earl of Strathmore and Kinghorne