The correspondence consists of the following:

(i) Letters, 1671, of the 1st Marquess of Tweeddale and of Jean, Countess of Tweeddale, with a transcript, 19th century, of a letter, 27 April 1679, of the 1st Marquess (folio 1);

(ii) Letters, 1685-1710, of the 3rd Marquess of Tweeddale (folio 86);

(iii) Letters, 1694-1709, of Margaret, Countess of Roxburghe, and of the 1st Duke of Roxburghe (folio 116);

(iv) Miscellaneous family correspondence, 1682-1709 (folio 168).