Margaret Johnstone noblewoman; Peerage person ID=10625 Parents James Johnstone, 1st Earl of Annandale and Hartfell Lady Henrietta Douglas Children Robert Montgomery Siblings William Johnstone, 1st Marquess of Annandale Henrietta Johnstone George Johnstone John Johnstone James Johnstone, Lord Johnstone Lady Mary Johnstone Partners Sir James Montgomery of Montgomery, 4th Bt.