Lady Millicent Fanny St. Clair-Erskine, The Duchess of Sutherland and wife of the 4th Duke (d. 1955), was a writer and editor, and served in the Red Cross during World War I. She was the half-sister to the Countess of Warwick. Rosemary, Viscountess Ednam   1917 or 1919  (daughter to Millicent, Duchess of Sutherland) ...