A manuscript volume, [1747x1748], written by an unidentified scribe, entitled 'A Catalogue of the Representatives in Parliament for the Counties & Boroughs In Wales From the first returns of them A[nn]o 1542 to this present Parliament Conven[e]d A[nn]o 1747' (f. 4), listing the Members of Parliament of all county and borough seats in Wales, with the exception of Monmouthshire and Monmouth (ff. 5-62).
The seats are listed alphabetically by county with MPs then listed chronologically by monarch and regnal year; the Parliaments of the Commonwealth and Protectorate periods are omitted.

An interleaved copy of W. R. Williams, The Parliamentary History of the Principality of Wales..., 1541-1895 (Brecknock, 1895) with copious manuscript additions and corrections in the hand of the author, [c. 1912], in preparation for a projected second edition.
Deletions and minor corrections were generally made directly to the original text with more substantial changes supplied on the interleaves opposite. Among the main additions are details of elections, 1895-1910. There are a few further additions to the List of Subscribers (pp. 213-218) up to about 1919. Three items found in the volume have been loosely inserted opposite pp. 77 and 78.