The papers consist of the following: (i) Correspondence, 1698-1715, of Charles, Marquess of Tweeddale (1667-1715), who was known as the Master of Yester until 1697, and as the Earl of Yester from 1697 until he succeeded his father, the 2nd Marquess, in 1715 (folio 1); (ii) Correspondence, 1685-1736, undated, of Susan, Marchioness of Tweeddale (died 1757), formerly Countess of Dundonald (folio 49).