Margaret Rhodes, née Elphinstone, is the daughter of Sidney, 16th Lord Elphinstone, and his wife Lady Mary Bowes-Lyon, a sister of Lady Elizabeth Bowes-Lyon, who became Queen Elizabeth The Queen Mother. In childhood, she was a frequent playmate of her first cousin, the present Queen Elizabeth II, and was a bridesmaid at her wedding. As an adult, she held several offical positions at court. In 1950, she married Denys Rhodes, a writer, and had four children. She published her autobiography, The Final Curtsey, in 2011.