A volume containing Welsh poetry, mostly in strict metre (pp. 1-433), together with some prose items, including recipes for making inks and baits for catching trout (pp. xvii-xviii), a short Welsh vocabulary (pp. xix-xxii), descriptions of the coats of arms of Welsh families (pp. 444-454) and the names of the Fifteen Tribes of Gwynedd (pp. 454-456), written in a late-seventeenth century hand.
Many of the sixteenth- and seventeenth-century poems are addressed to members of the families of Owen of Clenennau and Brogyntyn and Wynn of Glyn and Ystumcegid: the manuscript was probably compiled for Elizabeth Wynn of Glyn and Ystumcegid or for her daughter Margaret Wynn shortly after the latter's marriage in 1683 to Sir Robert Owen of Clenennau and Brogyntyn (see pp. 23-25). An index to the poems is supplied by the scribe on pp. 434-443. Poetry in more than one hand has been added between c. 1691 and c. 1713 on pp. vii, 457-476, 484-485, 489-510, including elegies to Sir Robert Owen by Huw Morys (pp. 468-471) and to his sister-in-law Mrs Catherine Pennant by David Davies (p. 473), and a poem in free metre, dated 1713, probably by Dafydd Williams, Rhuthun (p. vii).

A volume, [16 cent., second ½], probably in the hand of Thomas Powell (d. 1588), Parc y Drewen, Whittington, co. Salop, containing a much shortened text of Humphrey Lhuyd's English version of Brut y Tywysogion, upon which version David Powel based his Historie of Cambria, now called Wales ... (London, 1584) (see Brut y Tywysogion ..., ed. by Thomas Jones (Cardiff, 1952), pp. xiv-xviii). Omissions mainly involve passages relating to events outside Wales, church affairs and the papacy, anecdotes, explanations of Welsh personal and place-names, and the arguments against Polydore Vergil. Three other copies are known: BL, MS Cotton Caligula A VI; Oxford, Bodleian Library, Ashmolean Museum MS 847; and NLW, Llanstephan MS 177. Also included are a pedigree of the kings and princes of North Wales from Cadwaladr to Llywelyn ap Gruffudd (ff. iv-v verso), a painted coat of arms of Cadwaladr (f. 1), and an index of personal and place-names (ff. 168-70 verso). Six lines of English verse are added in a contemporary hand on f. 171 verso.