Two volumes of transcripts, [1758], compiled Evan Evans (Ieuan Fardd), subsequently bound as one volume. Part I (foliated 1-153) contains 'The Gododin an Heroic poem of the sixth Century transcribed from a Copy of Thomas Wiliams of Trefriw M.D., and the Works of Taliessin from Dr Davies of Mallwyd's hand, and other particulars wrote by the Revd Mr. Evan Evans' (f. 1) and includes transcripts of Llyfr Aneirin (ff. 5 verso-36), Llyfr Taliesin (ff. 37-126) and other manuscripts.
Part II (foliated 1-73) contains further poetry, by poets including Llywarch Hen, Iolo Goch, Dafydd ab Edmwnd and Gutun Owain (ff. 1-28, 34 verso-47); notes on Welsh orthography (following the cywydd beginning at f. 19); a list of poets from a manuscript of Dr John Davies (f. 39 verso); a copy of Sir Thomas Wiliems's Preface to his Latin-Welsh Dictionary (ff. 48-64); a letter, dated 26 January 1757, from Lewis Morris to 'Mr. Vaughan of Corsygedol' (ff. 65-69); a letter, dated 14 June 1755, from Richard Morris to the same Mr Vaughan, enclosing a copy of the Transactions of the Society of Cymmrodorion and referring to Lewis Morris and to Goronwy Owen (ff. 70-71); and a table of contents for Part I only, [?in the hand of Owain Myfyr] (f. 72).

A manuscript in the hand of John Jones, Gellilyfdy containing 'The Three Antiquities of Bryttaen' in six chapters. The material relates to the Welsh bards, the Welsh language and alphabet, and Welsh grammar.

A manuscript in the hand of Moses Williams containing 'Y Groclith' (ff. 1-22) and 'Rybud Gabriel at Veir' (ff. 23-26) (Luke i, 26-38), both of which are written in two columns, the one in mediæval, the other in modern orthography.