A composite volume in three parts, dated to the late-fifteenth century (pp. 1-32), 1650 (pp. 33-48) and the eighteenth century (pp. 49-102), containing astrological material (pp. 2, 15-16, 95-98, 26-32); names of plants in Latin and Welsh (p. 3); charms (pp. 4-6); the Paternoster, with every sentence explained (p. 7b); theological tracts (pp. 10-14); a commentary on the Prophecies, dated 5 May 1650 (pp. 33-48); fragments of Bruts (pp. 49-64, 71-74, 83-94); a list of the hundreds and commotes of Wales (pp. 99-100) and of the parishes of Carmarthenshire (pp. 101-102); etc.
On p. 6 is the note 'Gruff: llwyd ap Madoc Dd. a wnaeth y llyvyr hwnn i T. ap howel'.

'Gossodedigaetheu a Messureu y Deyrnas, Cantrevi a Chymydeu Kymry', being a list of hundreds, commotes and other geographical divisions within Wales. At the end of every division is a list of its castles.
The list of 'Cantreds and Commotes of Wales' (p. 5) agrees practically with the one in Peniarth MS 163.

A 'Copy of the Dedication of, and Preface to Sir Thomas Wiliems's Latin-British Dictionary', together with notes on the life and work of Dr John Davies, Mallwyd, and ballads, which include the works of Rowland Fychan of Caer-gai, Lewis Morris and Richard Abraham, written c. 1738 (see p. 2). Also including englynion to Robert Vaughan, Caer-gai by Dr John Davies; a translation by Dr Davies of Thomas Wiliems's dedication of his Dictionary to Sir Richard Wynne, Gwydir; and notes concerning Thomas Wiliems's Dictionary at Hengwrt, with a copy of its Preface (see Peniarth MS 228).

Medical recipes similar to those of 'Meddygon Myddfai', written 1693 (see p. 73).

A manuscript in the autograph of Evan Evans (Ieuan Fardd) containing transcripts of the Laws of Hywel Dda from an unidentified manuscript (ff. 1-9) and from the White Book of Hergest (ff. 63-67); a transcript of a commonplace book, temp. James I, the contents of antiquarian interest, being mostly concerned with Druidism and early British history (ff. 25-49); a list of the contents of the White Book of Hergest (f. 68) and transcripts of parts of it (ff. 69-74); a list of the hundreds, commotes and parishes of Wales (ff. 87-110); and various other extracts, etc.
For the text beginning at f. 75 see Peniarth MS 267, pp. 83, 86, 115; for the text beginning at f. 84 see op. cit., p. 26; for the text beginning at f. 86 verso see op. cit.; for the text beginning at f. 111 see op. cit., pp. 53-76.

A manuscript written c. 1634 (see p. 165) containing pedigrees (pp. 164-166, 189-215, 217-243); Bonedd y Saint (pp. 87, 216); 'Dosbarth Arveu' (pp. 167-188); proverbs (pp. 160-162); triads (pp. 259-260); 'Cantrevyd a chymydeu Cymru' (pp. 244-245); medical recipes (pp. 249-258); &c.
The manuscript is in the same hand as Llanstephan MSS 122-125 and may be that of John Pryce, rector of Mellteyrn (see p. 103).

Transcripts of parts of the White Book of Hergest in the hand of Evan Evans (Ieuan Fardd), containing a list of the hundreds and commotes of Wales (ff. 1-5); the Paternoster (ff. 14 verso-20), the Credo (ff. 21-24); Emyn Curic Sant (ff. 25-26); an explanation of the Trinity (ff. 27-28) and of the beginning of the fourth gospel (ff. 29 verso-32); Elucidarium (ff. 33-144); and a summary chiefly of Biblical history (ff. 145-200 verso).

A transcript of the texts of 'Yspryt Gwidw', 'Y Saith Pechawd Marwawl', 'Saith Rinwedd yr Eglwys', and 'Saith Weithret y Drugaredd'; and a transcript, by W. J. Roberts ('Gwilym Cowlyd'), of the list of Welsh commotes written by Perys Mostyn in Cwrt Mawr MS 2.