Mary Innes-Ker, Duchess of Roxburghe

Mary Evelyn Hungerford Innes-Ker, Duchess of Roxburghe, born Lady Mary Crewe-Milnes, was a British aristocrat. She was a daughter of Robert Crewe-Milnes, 1st Marquess of Crewe, by his marriage to Lady Peggy Primrose, one of the first seven women appointed as magistrates in 1919 following the passing of the Sex Disqualification (Removal) Act 1919. Her maternal grandparents were Hannah de Rothschild and Archibald Primrose, 5th Earl of Rosebery.