Material collected by John Montgomery Traherne in connection with the preparation of his monograph on Sir Matthew Cradock. It includes pedigrees and notes, a transcript and English translation by Taliesin Williams ('Ab Iolo') of 'Dyma Ganu a wnaeth Rhys Brydydd i Syr Mathias Caradog am y Cwrdd Prydyddion a wnaeth efe yn y Merthyr Mawr', sketches, coats of arms, a letter, 1840, to Traherne from George Grant Francis, etc.

The author's copy, interleaved, with numerous manuscript and other additions, of Stradling Correspondence: A Series of Letters written in the Reign of Queen Elizabeth, with Notices of the Family of Stradling of St. Donat's Castle, Co. Glamorgan. Edited by the Rev. John Montgomery Traherne ... (London, 1840). Among the additions are notes and memoranda by John Montgomery Traherne, facsimiles of autographs, sketches of monuments and memorials, coats of arms, bookplates, autograph letters (including one from Agnes Strickland), etc., and a document, 1602, bearing the autographs of Thomas Mansell and W. Pryce.