A composite volume consisting of previously separate, home-made booklets containing material in the hand of Edward Williams ('Iolo Morganwg') bound into one volume). P. 11 (probably the 'title-page' of the section now paginated 13-100) is inscribed 'General View of the Agriculture of the County of Glamorgan, 1796', and is followed (pp. 13-100) by an incomplete essay on the said county [by Edward Williams]. This essay contains four chapters with sectional sub-headings 'Situation, Extent, etc.', '[Divisions and] Market Towns', 'Climate', 'Soil and Surface', 'Minerals', 'Water' (rivers, springs), 'State of Property' (mode of tenure, a list of the principal landholders), 'Buildings' (building materials, a list of the seats of landed gentry, a description of a typical farmhouse, outbuildings, cottages, etc.), 'Size of farms and character of farmers', 'Rent', and 'Tithes'. P. 101 bears the inscription 'Antiquities of Lantwit Major in the County of Glamorgan. Collected from various Documents. By Edward Williams. 1800', and is followed (pp. 105-39) by material relating to St. Illtud and the monastery and monastic school at Llanilltud, descriptions of inscribed stones at Llanilltud, and details of a twelve- point plan for setting up a committee and employing salaried research workers to supervise and undertake research for a history of the county of Glamorgan. A good deal of the material relating to Llanilltud is allegedly taken from an account compiled by the Reverend David Nichols, M.A., in 1729, and the whole of the contents of pp. 105-39 is presented in the form of a letter [from Edward Williams] to David Thomas, esqr., at Bath, 20 October 1798 (see IM, t. 307). P. 165 is inscribed 'Collection for the History of Dunraven, 1814', and is followed (pp. 169-87) by miscellaneous historical, pseudo-historical, and genealogical material relating to Dunraven Castle [co. Glamorgan] and its owners, and to Bran Vendigaid ap Llyr and his son Caradog (Caractacus) both of whom allegedly resided at Dunraven, (p. 188) an outline scheme or chapter headings for a proposed history of Dunraven Castle, and (on two unnumbered leaves between p. 188 and p. 189) a copy of a letter, ? 2 February 1818, from [Edward Williams] from Keven Cribor [co. Glamorgan], to Mrs. Wyndham of Dunraven Castle relating to the writer's research work concerning the said seat and the notes he was forwarding. Pp. 211-17 contain an incomplete copy of 'An Account of the cause of the conquest of Glamorgan by Sir Robert Fitz Haymon and his twelve Knights by Sir Edward Mansell of Margam, Knight' (for this and a fuller 'account' attributed to the same author in NLW MS 13161A (Llanover C. 74) see TLLM, tt. 200-03). P. 251 is inscribed 'List of Sheriffs and Und[er]sheriffs For the County of Glamorgan From the year 1541 To the year (blank) From a MS. in the Possession of the Revd. Mr. Davies of Wenvoe . . . 1808', and is followed ( pp. 255-71) by the said list for the period 1541-1808. Other items in the volume include extracts from a biographical dictionary (1798) relating to the English poet John Gower, Robert of Gloucester (temp. Henry II), and [Thomas] Sternhold (ob. 1549) (pp. 155-6); further notes relating to Dunraven Castle (p. 190); an extract from a letter from W. Davies to O. Jones, 1792 (p. 195); anecdotes relating to the brothers Richard and William Twrch and the building of a porch at Bewper [co. Glamorgan] (see also NLW MSS 13089E, 13103B, and IM, tt. 272-3) (pp. 205-07); a list of 'Castles in Gower' (p. 232); notes on birds (unnumbered leaf between p. 232 and p. 233); a note on the construction of a wheelbarrow (p. 233); a copy of an 'englyn' by [Edward Williams] 'Iolo Morganwg', etc. (p. 234); a copy of the inscription on the tomb of Edward Pritchard, rector of Flimnston (sic) [co. Glamorgan], ob. 1742, and his wife Margaret, ob. 1707/08, in Trefemin (Flemingston) church (p. 235); notes on Caer Fule, a Roman fortification near St. Olave's Church, Newport, and Trefela, a village in the parish of Llangwm near Usk (p. 236); a note on the rocks in Glam[organshire] (p. 237); copies of an 'englyn' and a six-line stanza of Welsh verse by [Edward Williams] 'Iolo Morganwg' (p. 238); brief notes referring to Jenkin Jones of Llangyfelach, 'minister of a Catabaptistical Congregation circa anno 1649', [William] Erbury, Walter Caradoc, Samuel Jones of Bryn Llywarch, and Morgan Llwyd (p. 239); a note on Huw Spencer, the younger, and his building activities in Glamorgan, ? temp. Edward II (p. 240); a list of Welsh superstitions ('Ofergoelion Gwlad Gymru') (p. 242 ); and notes on an outbreak of plague at Drenewydd Notais (Newton Nottage) [co. Glamorgan], circa 1620-1630 (p. 243).

A list of the sheriffs, 1541-1854, undersheriffs, 1541-1826, 1842-1845, and county clerks, 1541-1784, of Glamorgan, with notices of holding Great Sessions at Cowbridge, 1682-1769, and of the elections of Knights of the Shire, 1737-1820, and an anecdote about Lewis Thomas ab William, sheriff for 1612.

A transcript by John Montgomery Traherne of Rice Merrick's manuscript (published in 1825 and again in 1887) usually known as 'A Book of Glamorganshire Antiquities by Rice Merrick Esq. 1578'. The transcript is preceded by the following note: 'The following extracts illustrating the History of Glamorganshire were made from a MS. in the possession of Canon Williams Wilkins Esq. of Pwllpant transcribed in 1702 by E. Lhuyd at the Ashmole Museum Oxford from a MS. bearing date 1657. This MS. appears to be extracted from of [sic] a folio MS. in the Library of Queens Coll. Oxford entitled A Book of Glamorganshire Antiquities ... The Provost and Fellows kindly permitted me to peruse this vol. a duplicate copy of which was burnt at Havod [Cardiganshire]'. There are also numerous additions, including lists of knights of the shire and sheriffs, pedigrees, copies of deeds and other charters, notes on the manor of Llanbleddian, etc.

A copy, which belonged to John Montgomery Traherne, of The Names of the Sheriffs and Under-Sheriffs of Glamorgan. A.D. 1541, to 1792, from M.S. of Mr. Evan Simmons, of Nottage; continued to 1850, from M.S. of H. Gwyn, Esq., M.P. Communicated to the Neath Institution by H. H. Knight ... (Neath, 1850).