A manuscript containing a Welsh grammar. A note in the hand of Moses Williams reads: 'This copy is out of a MS. lent me by R. Mostyn of Penbedw Esqr., which MS. formerly belong'd to Thomas ap Ivan of Hendre Forfydd [i.e. Peniarth MS 157]. Twas compared with the said MS. 29 Julii 1717 ... Twas also collated with another copy that was once in the possession of Huw ab Owen alias Huw Machno.' There are notes by Moses Williams on the text throughout the volume.
A manuscript in the hand of Moses Williams containing 'Buchedd Collen' (pp. 25-31), 'Hanes Taliesin' (pp. 33-44), 'Keyryd' (p. 77), transcripts from the Black Book of Carmarthen (pp. 1-20, 98-118) and the Book of Taliesin (pp. 79-97), triads taken from 'Y Cwta Cyfarwydd' (p. 45 (see Peniarth MS 50, p. 149)) and from the work of John Jones, Gellilyfdy (p. 62) and other material, some of which relates to Welsh geographical features (pp. 32 (taken from the work of John Jones, Gellilyfdy), 75-76, 121). P. i contains an index of the contents. For p. 1 of this manuscript see Peniarth MS 98b, p. 2; for pp. 1-20 see Peniarth MS 98b, p. 49; for p. 45 see Peniarth MS 50, p. 149. At the end of the section at pp. 4-20 is noted 'O'r Llyfr du o Gaerfyrddin hyd yma; ac o hyn allan o law W. Salsburi medd Roesser Moris.'
A manuscript in the hand of Moses Williams containing 'A Chronological Account of the several Editions of the Scripture in Welsh', which included 'a thin Book in Qto, that contained among other things, the Lord's Prayer & the Decalogue', which 'I suppose was done by Sir John Pryse [London, 1567]'. Loose in the manuscript is a letter from 'Rich: Morris to W. Jones'.
A manuscript in the hand of Moses Williams (pp. 1-4) and another (pp. 5-66) containing a transcript of Kulhwch ac Olwen and of Y Mabinogion from the Red Book of Hergest.
A manuscript in the hand of Moses Williams containing 'Consuedines Civitatis Hereford'; 'Consuetudines Arcenfield Ex Libro cui tit: Domesdei:' and extracts from the record of Caernarfon.
A manuscript in the hand of Moses Williams containing the Interpretation of Dreams from Llanstephan MS 28; and 'Gr. ap kynan twssog kymry a wnaith gyfreth ar y gwyr wrth gerdd' in a seventeenth century hand.
A manuscript in the hand of Moses Williams entitled 'Lexicon Historicum Brit:', being an index to the proper names occurring in the Triads, the Mabinogion, Englynion y Clywaid, De Situ Brecheniauc (MS Cott.), 'Gwehelyth Saint Ynys B.' (Harleian MS 95 A. XVI), Achau y Saint, Llyfr Gutun Owain, Historia Kulhwch ac Olwen, Breuddwyd Maxen, Breuddwyd Rhonabwy, Cyfranc Lludd a Llefelys and Brut y Tywysogion.
A manuscript containing for the most part the lives of saints. Pp. 1-389 were written by Roger Morys of Coed y Talwrn, Llanfair Dyffryn Clwyd (see p. 93) towards the close of the sixteenth century, while pp. 390-403 were written by Thomas Evans (Thomas ab Ifan), Hendreforfydd (see pp. 93, 389, 390-403 (pp. 390-403 dated 5 March 1628)). P. 404 contains an index in the hand of Moses Williams.
A manuscript containing lives of saints, etc. An index is included on p. i. Pp. i, 427-433 are in the hand of Moses Williams. A note - 'Pretium £1 . 4 . 6 An. 1715' - on the fly-leaf is in the same hand as most of the manuscript. At the end of the Life of St Margaret, which begins at p. 427, the scribe has written 'Felly y terfyna buchedd saint y Marged a esgrifenodd Tho: Evans 1628 fis Mawrth 5 dydd'.
Welsh poetry transcribed by Moses Williams from Llyfr Coch Hergest (the Red Book of Hergest), cols 1026, 1028-1031, 1034, 1039-1049-1056. At the end of the manuscript is a copy of a letter (f. 60), dated at Oxford, 7 September 1708, relating to the burning of Irish and British manuscripts by Jesuit missionaries in Brittany, 'excepting such as tended to Devotion'.
