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Pedigrees, mainly of North Wales families; a list of uncommon Welsh words taken from John Davies, Mallwyd: Dictionarium ... (London, 1632); a vocabulary of some 'hard' Latin words; 'cywyddau' and other poems by Rowland Williams, Rhys Meigen, Dafydd ap Gwilym, Rowland Vaughan, Siôn Cent, Dafydd ab Edmwnd, Wiliam Phylip, Owen Gruffydd, Edmwnd Prys, Robin Ddu, Siôn Phylip, Sion Tudur, Gruffudd Phylip, Maredudd ap Rhys, Gutun Owain, Iolo Goch, Morus Berwyn, Ffowc Prys, Owain Gwynedd, Roger [C]yffin, Siôn Brwynog, Syr Owain ap Gwilym, Wiliam Llŷn, Huw Arwystli, Richard Phylip, Dafydd Nanmor, [If]an Llwyd ('o wain Eingian'), Hywel Cilan, Edwart Urien, Lewis Glyn Cothi, Rhys Cain, Lewis Trefnant, Matthew Brwmffild, James Dwnn, Ieuan Dew Brydydd, Heilyn Fardd, Huw Machno, Guto'r Glyn, etc. ; a description of Britain based on the early chronicles; the triads of Dyfnwal Moelmud; etc.

An incomplete volume (ff. 1-85, 176-243) consisting largely of cywyddau and englynion by Sion Kent, Sion Tudvr, Grvffydd Grvg, Meredith ap Rees, Will'm ap Sion ap D'd, Gruff' Hiraethog, Will'm Llynn, Huw Arwistl, D'd ap Edmwnd, D'd ap Gwilim, Rob't Leiaf, Rys Goch or Yri, Mastr Hari, Ifan Tew Brydydd, Gytto Glyn, Sion Philipp, Roger Kyffyn, Ievan Fychan, Sr. Davydd Trevor, Tudur Penllyn, Rowland Fychan, Tomas Prys, Evan Tudvr Owen, Ievan Brydydd Hir, William Elias, Tudur Aled, Gruff' ap Ievan, Rys Pennarth, Bedo Aerdrem, Bedo Brwynllys, Iolo Goch, Ellis Rowland, Howel ap D'd ap Ievan ap Rys, D'd Namor, D'd Ddv o Hiraddvc, Lewys Glyn Kothi, Howel ap Ievan ap Rys, Owen Gruffydd, Michael Prichard, Edmwnd Price, Hughe ap Ed'd Lloyd, Rice Kain, Richard Hughes, [Richard Davies] 'Escob Dewi', Ed'd Maelor, Ievan ap Tudvr Penllyn, Harrie Howell, Sion Kain, and Robin Ddv. Towards the end of the volume there are short texts such as englynion in Latin, 'llyma gas bethav Owain Kyveiliog', 'xxiiij gwell', 'Geirie gwir Taliesin', triads, proverbs, the nine grades of kinship, medical recipes, 'Llyma henwau y pedair Caingc ar ddeg Cydwgan a Cyhelyn', and 'Henwau'r pedwar Gosdeg Cerdd dannau'. The greater part of the manuscript was written in the seventeenth century; but there are additions and marginal notes to the nineteenth century. There is an index ('Tabl y llyfr') to ff. 1--76, in a seventeenth century hand. Between ff. 4 and 6 are inserted two leaves (pp. 129-30, 135-6) of David Jones (Trefriw) (ed.): Cydymaith Diddan (Caer Lleon [1766]).

'Llyfr Ystrad Alun', containing (a) items in prose, (b) a very large number of 'cywyddau', 'awdlau', 'englynion', and 'carolau' or 'cerddi', and (c) some poems in English. --
(a) The prose items are 'Araith Wgan', 'Addysg rhifyddiaeth, yr hon ddengys rhifedi or ddaiar hyd y lleuad, or lleuad hyd yr haul, or haul hyd y Nefoedd, or nefoedd hyd vffern a lled a thewdwr y ddaear i bob ffordd', 'Dyna fal i mae y saith blaened yn Raenio yn gyntaf Satarnus, Jupiter, Mars, Sol, Venus, Mercurius a Luna...', and 'Breuddwyd Gronwy ddu'. -- (b) Among the poets represented are Sion Phylip, Raff ap Robert, Morgan ap Hughe Lewis, Edmwnd Prys, Wiliam Cynwal, Wiliam Phylip, Thomas Llywelyn, Dafydd Llwyd, Sion Cent, Sion Tudur, Hwmffre Dafydd ab Ieuan, Gruffudd Gryg, Thomas Prys, Dafydd Vaughan (alias Dafydd ab Ieuan), Huw Llwyd Cynfal, Huw Morus, Sion Ifan Clywedog, Maredudd ap Rhys, Hywel Swrdwal, Sion Brwynog, Dafydd Nanmor, Iolo Goch, Owain Gwynedd, Ieuan Brydydd Hir, Gruffudd ab Ieuan ap Llewelyn Fychan, Huw Arwystli, Gruffudd ab yr Ynad Coch, Ieuan ap Rhydderch ab Ieuan Llwyd, Robin Clidro, Harri Hywel, Taliesin, Dafydd ab Edmwnd, Guto'r Glyn, Rhys Goch Eryri, Gruffudd ap Dafydd Fychan, Tudur Aled, Bedo Brwynllys, Wiliam Llyn, Rhys Cain, Gutun Owain, Dafydd Gorlech, Dafydd Llwyd ap Llywelyn ap Gruffudd, Llywelyn ab Owain, Robin Ddu, Hywel Rheinallt, Ieuan Dyfi, Dafydd ap Gwilym, Gwerful vch Hywel Fychan, Rhys ap Harri, Mathew Owain, Dafydd Humphreys, J. Jones, Gruffydd James, Syr Hughe Heiward, Hopcyn Thomas ('O Llanelli'), Thomas Rowland, Wil Watkin Ju., Han Edward Morus, Wiliam Siencyn, Ifan ap Sion, Lewis Dwnn, Robin Dyfi, Ifan ap Cadwaladr, Sion Morgan, Lewis Gwynne, Tomos ab Han Sion, Sion Scrifen, Wiliam Dafydd, Rees Prees, Owen Edward, Oliver Rogers, Dafydd Manuel, Richard Abram, Rowland Vaughan, James Dwnn, Robert Lloyd, etc. -- (c) The English items include 'A Christmas Carol' by D. H., 'Agony of or Saviors birth' by J. Jones, 'A Confession of a sinner', 'The prayer of a sinner at the hour of death', 'An effectuall prayer for grace, mercy and forgiveness of sins', 'The dying teares of a penitent sinner', 'Queene Elizabeths delight', 'The Horny booke' by John Scriven, 'A lover departure' by D. ff. Two poems by Dafydd Vaughan, 'Gwir gariad' and ['Camgymeriad'], have stanzas in English and Welsh alternately, the Welsh following the English. -- As so many of the poems in the manuscript are by Dafydd Vaughan he may possibly have been the scribe. The volume has annotations by Walter Davies ('Gwallter Mechain') who has designated it 'Llyfr Ystrad Alun' and who transcribed some poems from it - see NLW MS 1658.

'Llyfr Gwyn Mechell, sef Casgliad o Ganiadau ... wedi ei ysgrifenu gan William Bulkeley, Yswain o'r Brynddu, Llanfechell yn Mon ...', containing 'cywyddau', etc. by Sion ap Hywel ap Llywelyn Fychan, Morys Dwyfech (Morus ap Dafydd ab Ifan ab Einion), Lewis Glyn Cothi, Syr Dafydd Trefor, Gruffudd Hiraethog, Hywel [ap] Rheinallt, Dafydd ap Gwilym, Sion Tudur, Tudur Aled, Ieuan Dew Brydydd, Dafydd ab Edmwnd, Rhydderch ap Richard, Huw ap Rhys Wyn, Ieuan ap Rhydderch ab Ieuan Llwyd, Lew[y]s Môn, Sypyn Cyfeiliog, Ieuan Deulwyn, Wiliam Llŷn, Sion Phylip, Maredudd ap Rhys, Huw Pennant, Gruffudd ap Dafydd ap Hywel, Rhisiart ap Hywel, Huw Arwystli, Dafydd Manuel, Gruffudd ab Ieuan ap Llywelyn Fychan, Edward Samuel, Wiliam Cynwal, Roger Cyffin, Huw Mor[y]s, Robert Wynn ('Ficcar Gwyddelwern'), John Roger, John Davies ('Sion Dafydd Las'), Rhisiart Brydydd Brith, Simwnt Fychan, Huw Llwyd ('o Gynfal'), Iorwerth Fynglwyd, Iolo Goch, Dafydd Llwyd ap Llywelyn ap Gruffudd, Guto'r Glyn, Bedo Phylip Bach, Deio ab Ieuan Du, Rhydderch ap Sion, Edwart ap Rhys, Syr Dafydd Llwyd, John Griffith (Llanddyfnan), Elen G[oo]dman, Rhisart Gray, Huw Humphreys ('Person Trefdraeth'), Rhisiart [Richard] Bulkeley, Owen Prichard Lewis, Dafydd ap Huw'r Gô ('o Fodedern'), Rhys Gray, Edward Morus, Sion Prys, John Williams ('o Bontygwyddel'), Dafydd Llwyd (Sybylltir), Lewis Meurig ('y Cyfreithiwr'), Peter Lewis, Roger Williams, Wiliam Peilyn, Richard Abram [Abraham], Huw [Hugh] Bulkeley ('o Lanfechell') and Ifan Jones ('o'r Berthddu'); together with extracts relating to State affairs in the reign of Charles I.

A seventeenth century transcript of 'cywyddau' and other poetry by Edmwnd Prys, John Havard ('o lanyspyddaid'), Tudur Aled, Simwnt Fychan, Siôn Tudur, Robin Dyfi, Dafydd ap Gwilym, Dafydd ab Edmwnd, Sion Fychan (Caethle), Robin Clidro, Richard Phylip, Huw Arwystli, Siôn M[a]wddwy, Sion Celli, Syr Huw Roberts, Sion Cent, Sion Phylip, David Jones, Ffowc Prys, Sion Cain, Thomas Prys, Huw Llwyd (Cynfal), Richard Elis, Sion Gibbs ('gyfraithiwr ludlo'), John Davies (Mallwyd), Morys ab Ieuan ab Einion, Dafydd Nanmor, Iolo Goch, Wiliam Llŷn, Owain Gwynedd, Syr Lewis Meudwy, Syr Phylip o Emlyn, Deio ab Ieuan Du, Bedo Brwynllys, Ieuan Dew Brydydd, Syr Robert Myltwn, Bedo Hafesb, Syr Rhys o Garno, Dafydd Llwyd ap Llywelyn ap Gruffudd, Gruffudd Phylip, Robin Ddu and Gruffudd ap Dafydd Fychan.

Transcripts, mainly by Rhys Jones o'r Blaenau, editor of Gorchestion Beirdd Cymru (Amwythig, 1773), of 'cywyddau' and other poetry by William Llŷn, Rhys Goch Glyndyfrdwy, Tudur Aled, Edward Morus [Perthi-llwydion], Gruffudd Hiraethog, Gruffudd ab Ieuan ap Llywelyn Fychan, Gruffudd Gr[y]g, Dafydd ab Edmwnd, Lewis Daron, Lewis Menai, Sion Tudur, Goronwy Owen, Sion Dafydd Lâs, Thomas Prys, Huw Mor[y]s, Dafydd ap Gwilym, Dafydd Nanmor, Mor[u]s Dwyfech [Morus ap Dafydd ab Ifan ab Einion], Rhys Cain, Bedo Brwynllys, Bedo Aeddren, Ieuan Deulwyn, Gruffudd Llwyd ap Dafydd ab Einion, Edwart Urien, Sion Cain, Ieuan Dew Brydydd, Lewis Glyn Cothi, Lewis Trefnant, Maredudd ap Rhys, Tudur Penllyn, Ieuan ap Hywel Swrdwal, Llawdden, Owain Gwynedd, Sion Ceri, Syr Ifan [o Garno], Robin Ddu, Hywel [ap] Rheinallt, Gutun Owain, Guto'r Glyn, Huw Arwystli, Dafydd Ddu Hiraddug [Dafydd Ddu Athro], Ieuan ap Tudur Penllyn, Iolo Goch, Sion Cent, Ieuan Brydydd Hir [Hynaf], Huw Llwyd Cynfal, Gruffudd Llwyd ab Ieuan, Richard Cynwal, Huw Machno, Robert Dyfi, Iorwerth Fynglwyd, Syr Rhys o Garno, Hywel ap Dafydd ab Ieuan ap Rhys, Richard Phylip, Evan Evans ('Ieuan Brydydd Hir'), Ieuan Du'r Bilwg, Aneirin Gwawdrydd, Taliesin, Morys ab Ieuan ab Einion, Deio ab Ieuan Du, Rhys Pennardd, Meil[y]r Brydydd, Cynddelw [Brydydd Mawr], Thomas Jones (Tregaron) ['Twm Sion Cati'], Wiliam Cynwal, Llywarch Hen, Bedo Hafesp, Huw Pennant, Edward Richard (Ystradmeurig) and David Richards ('Dafydd Ionawr').

A composite volume comprising several incomplete manuscripts and fragments written in a number of mid-sixteenth century hands, and containing mainly pseudo-Aristotelian and religious prose texts and strict-metre poetry in Welsh, several of the poems addressed to members of the Lloyd family of Hafod-wen (Marrington), Chirbury, Shropshire. The Lloyd family were owners of portions, if not the whole, of the volume during the mid and second half of the sixteenth century, as contemporary notes and marginalia testify.
The volume comprises (a) ff. 1-43 verso, 133-191 in the hand of Harri ap Llywelyn ap John ap Gruffudd ap Siencyn of Welshpool ('Hari ffab llwelin a biav y llifer h[wn]' (f. 190), 'Hari fab llwelin ap Iohn ap grvfvdd ap cangkin or Trallwng a byav y llyffyr hwn ac ai ysgrifenodd ...' (f. 191)); (b) ff. 44-51 verso, consisting of fragments in several unidentified hands; (c) ff. 52-71 verso, 102-103 verso, 104 verso, 111-115 verso in an unidentified hand; (d) ff. 72-75, 76-78 verso, 100-102, 109-110, 118-132 verso, possibly in the hand of Cadwaladr ap Rhys Trefnant (the same hand occurs in Peniarth MS 79, pp. 41-44, 101-103, and Peniarth MS 82, pp. 285-287); (e) ff. 75, 89-99 verso in the hand of Llywelyn ap Rhys ab Ieuan ('lln ap Rys ap Ieuan ai ysgrifenodd pan oedd oed Krist yn M ccccc liii' (f. 94), 'lln ap Rys ap Ieuan ai ysgrifenodd pan oedd oed krist /1500/40/15' (f. 95)); (f) ff. 81-84, 85-88 verso, 96 verso, 105-107 in the hand of Huw Arwystl; (g) ff. 107-108 verso in an unidentified hand; and (h) ff. 116 verso-117 verso, an holograph cywydd by Owain Gwynedd. Englynion and verses have been added on several pages, mostly in unidentified hands of the mid sixteenth to late seventeenth centuries, but including some in the hands of Oliver Lloyd (f. 59), Huw Arwystl (f. 96 verso), Owain ap Syr Ieuan (probably) (f. 96 verso) and Wiliam Dyfi (f. 104).

A transcript by Ioan Pedr and others of NLW MSS 1246-1247D, which contain transcripts by Rhys Jones ('o'r Blaenau') of 'cywyddau' and other poetry by Wiliam Llŷn, Rhys Goch Glyndyfrdwy, Tudur Aled, Edward Mor[y]s, Gruffudd Hiraethog, Gruffudd ab Ieuan ap Llywelyn Fychan, Gruffudd Gr[y]g, Dafydd ab Edmwnd, Lewis Daron, Lewis Menai, Siôn Tudur, Goronwy Owen, Sion Dafydd Las [John Davies], Thomas Prys, Huw Mor[y]s, Dafydd ap Gwilym, Dafydd Nanmor, Morys Dwyfech [Morus ap Dafydd ab Ifan ab Einion], Rhys Cain, Bedo Brwynllys, Bedo Aeddren, Ieuan Deulwyn, Gruffudd Llwyd ap Dafydd ab Einion [Llygliw], Edwart Urien, Siôn Cain, Ieuan Dew Brydydd, Lewis Glyn Cothi, Lewis Trefnant, Maredudd ap Rhys, Tudur Penllyn, Ieuan ap Hywel Swrdwal, Llawdden, Owain Gwynedd, Sion Ceri, Syr Ifan [o Garno], Robin Ddu, Hywel [ap] Rheinallt, Gutun Owain, Guto'r Glyn, Huw Arwystli, Dafydd Ddu Hiraddug, Ieuan ap Tudur Penllyn, Iolo Goch, Siôn Cent, Ieuan Brydydd Hir [Hynaf], Huw Llwyd Cynfal, Gruffudd Llwyd ab Ieuan, Richard Cynwal, Huw Machno, Robert Dyfi, Iorwerth Fynglwyd, Syr Rhys o Garno, Hywel ap Dafydd ab Ieuan ap Rhys, Richard Phylip, Evan Evans ('Ieuan Brydydd Hir' ['Ieuan Fardd']), Ieuan Du'r Bilwg, Aneirin Gwawdrydd, Taliesin, Morys ab Ieuan ab Einion, Deio ab Ieuan Du, Rhys Pennardd, Meil[y]r Brydydd, Cynddelw [Brydydd Mawr], Thomas Jones (Tregaron), Wiliam Cynwal, Llywarch Hen, Bedo Hafes[b], Huw Pennant, Edward Richard (Ystradmeurig) and David Richards ('Dafydd Ionawr').

Transcripts by Ioan Pedr and others of 'cywyddau' by Thomas Prys, Gruffudd Hiraethog, Siôn Tudur, Ieuan Llwyd o'r T[y]wyn, Guto'r Glyn, Llywelyn Goch ap Meurig Hen, Richard Gruff[y]dd ap Huw, Dafydd ab Edmwnd, Gruffudd Kenrick Coch, Edmwnd Prys, Owain Waed Da, Hywel Cilan, Iorwerth Fynglwyd, Owain ap Llywelyn ap Moel y Pantri, Tudur Aled, Mor[y]s ab Ieuan ab Ein[io]n, Robert Leiaf, Ieuan Dyfi, Wiliam Llŷn, Huw Arwystli, Siôn Cent, Gruffudd ab Ieuan ap Llywelyn Fychan, Dafydd Nanmor, Siôn Phylip, Rhys ap Hywel ap Dafydd ab Einion, Lew[y]s Môn, Syr Dafydd Owain, Gruffudd Gryg and Dafydd ap Gwilym.

A note-book (pp. 1-80) and miscellaneous papers (pp. 81-268) containing notes, lists, extracts, transcripts, etc., in the hand of Edward Williams ('Iolo Morganwg') bound together in one volume. Page 1 is inscribed 'Cynnulliadau Tuag att Hanes Eisteddfodau Caerfyrddin, Caerwys, ag eraill Casgledig (gan mwyaf) yng Ngwynedd gan Iolo Morganwg', and this first section contains: a version of the 'statute' of Gruffudd ap Cynan as allegedly confirmed at an 'eisteddfod' held at Caerwys, co. Flint, in 1523, with a list of the names of the bards and musicians licensed at the said 'eisteddfod', transcribed 'O Lyfr Ygrif (sic) P. Panton, Yswain, o'r Plas Gwynn ym Môn' or, as stated elsewhere, 'Ex No. 65, Plas Gwynn, Môn' [i.e. Panton MS 65, now NLW MS 2031, of which see pp. 200-12] (see also NLW MS 13096B above) (pp. 17-27); a list of the twenty-four Welsh strict poetic metres with illustrative examples [?transcribed from the aforementioned Panton MS 65, pp. 186-93] (see also NLW MS 13096B) (pp. 27-35); notes relating to, and lists of, Welsh musical measures [?transcribed from Panton MS 65, pp. 194-200] (see also NLW MS 13096B) (pp. 36-39); an incomplete transcript [?from Panton MS 65, pp. 182-4] of notes relating to the twenty-four traditional Welsh accomplishments (p. 40); anecdotes relating to the poet Dafydd ap Edmunt and the 'eisteddfod' held at Carmarthen [c. 1450] under the patronage of Gruffudd ap Nicolas, transcribed 'Ex Vol. 17, P.P.' [i.e. Panton MS 17, now NLW MS 1986A, of which manuscript see ff. 111-17] (see also NLW MS 13096B) (pp. 41-47); further miscellaneous extracts from Panton MS 17 including an anecdote relating to the poet Huw Arwystli, notes relating to the 'cantrefi' of Glamorgan, etc. (pp. 47-49); transcripts of 'englynion' by, or attributed to, D[afydd] ab Gwilym, John Mowddwy, ?Thos. Lln., and Siôn Tudur (pp. 49-50); transcripts of twenty-three 'englynion' commemorating the year of accession of every English monarch, 1066-1558, attributed to Berud ap yr Ynad Coch, Bleddyn Ddu, Cynddelw Brydydd Mawr, Lln. Fardd, Dafydd y Coet, Harri Haram Param, Cyssymdaith Llevot Wynt epolawl, Mabwaith Hengrys o Iâl, Llywelyn ap Ho wrneth, Gwilym Ddu o Arfon, Dafydd Bach ap Madoc Gwladaidd, Llygad Gwr, Daniel Llosgwrn Marw (sic), Dafydd Eppynt, Ieuan Brydydd Hir, Bleuddyn ap Ieuan Hen, Hywel Ystorun, Ierwerth Fynglwyd, Rhys Nanmor, Hywel ab Bleuddyn Mathew, Owain y Bardd 'o Wynedd', and Huw Arwystli (pp. 51-56); a list of the commissioners in whose presence the 'eisteddfod' was held at Caerwys in 1567, and of the poets and musicians who were granted licences at the said 'eisteddfod' (pp. 56-59); a list of bards present at, and notes relating to, an 'eisteddfod' held at Bala [co. Merioneth] in 1740 (p. 60); an extract relating to the code of rules for Welsh bards and musicians allegedly compiled in the time of Gruffudd ap Cynan (p. 61); and transcripts of two sequences of 'englynion' (six and five respectively) allegedly written by Siôn Prichard Prys at an 'eisteddfod' held at Bala in 1680 with the object of enlisting the aid of the bishop of Bangor and Sir Roger Mostyn in an attempt to obtain a [royal] patent for holding an 'eisteddfod' (pp. 62-64). The greater part of the contents of the remainder of the volume consists of transcripts of Welsh poems in strict and free metres, including poems by, or attributed to, [Edward Williams] 'Iolo Morganwg' himself, Ieuan Tir Iarll 'sef John Bradford o'r Bettws ym Morganwg', Daf. Nicolas, William Hopkin, Daf. o'r Nant, Llywelyn ab Ifan, Siôn Hywel, Thomas Evan, 'Telynor o'r Drenewydd Nottais ym Morganwg', Morgan Pywel, Gwilym Tew (or Owain ap Rhydderch, or Ieuan ab Rhydderch), Twm ab Ifan ab Rhys, Gronwy William, Hywel Llwyd 'o Lancarfan', Wil. Tabwr, Dafydd Nicolas 'o Aberpergwm', Lewys William 'o Ferthyr Tydfyl', Thomas Williams, William Llywelyn, and Wm. Sanders 'o Landocheu'. The free-metre verse includes the words of songs written to specified airs. Other items in the volume include observations ?by Edward Williams after reading certain criticisms of John Hughes: An Essay on the Ancient and Present State of the Welsh Language [London, 1823] (pp. 113-114); notes on Welsh bardism (pp. 161-165); notes headed 'Etymologies that point out the origin and progress of civilization' (p. 167); extracts from Hugh Thomas: An Introduction to the British History [?London, ?1730] (pp. 169-171); a few Welsh triads and proverbs (pp. 227-228); a list of Welsh proverbs heard in Glamorganshire by [Edward Williams] 'Iolo Morganwg' arranged in alphabetical order according to the initial letter (incomplete, A-G only) (pp. 231-240); advisory or proverbial sayings attributed to Taliesin, Cattwn ddoeth, and Meugant (pp. 243-2444); a list of the ten commandments of St. Paul described as '. . . dengair deddf Pawl Sant y rhai a gafas efe o ben Iesu Grist . . .' (see John Williams: Barddas . . ., Vol. I, pp. 288-9) (p. 247); a list of Latin words commencing with the letter v with English meanings and Welsh ?derivatives (pp. 253-254); and (interspersed amongst other items), miscellaneous Welsh proverbs (pp. 241-end). In three instances the blank verso and margins of copies of a printed handbill (English) containing proposals, 1793, for publishing The Celtic Remains (vol. I by Lewis Morris, vol. II by Walter Davies) and of a printed handbill (Welsh) announcing an 'eisteddfod' to be held at Caerwys in 1798 under the patronage of the Gwyneddigion Society have been used for writing notes. A few loose leaves (pp. 261-268) have been placed in an archival envelope.

A transcript by William Jones ('Bleddyn'), Llangollen, formerly of Beddgelert, of 'cywyddau' and 'englynion' by Dafydd ap Gwilym, Iolo Goch, Dafydd ab Edmwnd, Tudur Aled, Guto'r Glyn, Tudur Penllyn, Syr Rhys o Garno, Sion Cent, Maredudd ap Rhys, Lewis Glyn Cothi, Llawdden, Robin Clidro, Sion Tudur, Wiliam Cynwal, Wiliam Llŷn, Edmwnd Prys, Simwnt Fychan, Sion Brwynog, Owain Gwynedd, Gruffudd ab Ieuan ap Llywelyn Fychan, Thomas Prys, Sion Prys ('o'r Gerddinen'), Edwart ap Raff, Rhys Ednyfed, Thomas Evans, Huw Arwystli, Watcyn Clywedog, Sion Dafydd Lâs [John Davies], Owen Gruffydd, Dafydd Gwyne, Dafydd Jones ('Ficer Llanfair Dyffryn Clwyd'), Gruffudd Hiraethog, Ieuan Deulwyn, Hywel ap Dafydd ab Ieuan ap Rhys, Inco Brydydd, Gruffudd Gryg, Ellis Rowland and Hywel ap Rheinallt; 'englynion'.

A volume containing transcripts, 17 cent., of cywyddau and other poetry by Dafydd ab Edmwnd, Rhys ap Hywel, Dafydd Nanmor, Guto'r Glyn, Iolo Goch, Sion Cent, Huw Arwystli, Lewis Morganwg, Maredudd ap Rhys, Edmwnd Prys, Dafydd ap Rhys, Taliesin, Sion Gwyn ap Digan, Morgan ap Huw Lew[y]s, Ieuan Brydydd Hir [Evan Evans or Ieuan Fardd], Catrin ferch Gruffudd ap Hywel ('o Landdeiniolen'), Lewis Glyn Cothi, Syr Phylip o Emlyn, Robert Lewis, Sion Phylip, Dafydd ap Gwilym, Wiliam Cynwal, Dafydd Nanconwy, Wiliam ap Robert, Robin Clidro, Gruffudd Hiraethog, Sion Tudur, Syr Huw Roberts and Hywel Swrdwal.

A composite volume containing transcripts, in the hand of Edward Williams ('Iolo Morganwg'), of miscellaneous Welsh poems, being mainly strict-metre verse and including pp. 11-37, poems by, or attributed to, Taliesin; 39-65, the 'Gododdin' of Aneurin; 67-163, poems by, or attributed to, Taliesin, Myrddin, Llywarch Hen, Gruffudd ap Maredydd ap Daf., Dafydd Benfras, Llewelyn Goch vap Meurig Hen, Madawg Dwygraig, Trahaearn Brydydd Mawr, Howel Ystoryn, Iolo Goch, Gronwy Ddu, Gwilym Ddu 'o Arfon', Thomas Llewelyn 'o rygoes', Morgan Powel 'o Lanhari', Llewelyn Siôn 'o Langewydd', Gronwy William, Syr Dafydd Llwyd Llewelyn, Ellis Ellis, D. ab Gwilym, Gruff. Gryg, D. ab Edmwnt, William Morris, William Elias, Hywel Dafydd ap Ieuan ap Rhys, Thomas Prys, Siôn Tudur, Gruff. ap Daf. ap Tudur, and Wm. Cynwal; 167-89, a collection of 'cywyddau' by, or attributed to, Dafydd ap Gwilim; and 189-241, poems by, or attributed to, Morgan ap Hugh Lewis, ? Rhys Goch 'o glyn-ceiriog', Bedo Aurddrem, Gr. ap In. ap Lln. Fychan, Syr Dafydd Owain, Madog Benfras, In. ap Gruff. Leiaf, Huw Arwystli, Lewis Menai, Syr Clement, Rhys Goch 'o'r yri', Lewis Glyn Cothi, Gruff. Llwyd ap Han, ?Gruff. Llwyd ab Dafydd ab Einion Lygliw, and Lewys Morganwg, and further poems by, or attributed to, Aneurin, Taliesin, Siôn Tudur, Iolo Goch, Gruffydd Grug, Dafydd ap Edmond, and Dafydd ap Gwilym. Pp. 165-6 contain a list of two hundred and forty-six 'cywyddau' attributed to D[afydd ap] G[wilym]. For poems in this volume attributed to Dafydd ap Gwilym but probably written by Edward Williams, and for couplets or sections of poems probably written by Edward Williams and inserted in, or added to, poems by Dafydd ap Gwilym see the relevant sections of IMCY.

A composite volume containing miscellaneous material in the hand of Edward Williams ('Iolo Morganwg'). The contents include p. 1, a copy of a proclamation announcing the holding of an 'eisteddfod' at Caerwys, co. Flint, in the year 1523; 2-26, extracts from, or versions of, the statutes for regulating the organisation and conduct of Welsh bards and musicians associated mainly with the name of Gruffudd ap Cynan; 26-35, a series of triads with the superscription 'Llymma Drioedd Gruffudd ap Dafydd Ychan'; 39-43, a copy of an 'Awdl perthynol i'r Rhyfel bresenol ag America' attributed to I[orwerth] ap G[wilym]; 49-60, transcripts of two Welsh poems attributed to Llywarch Brydydd y Moch and Cynddelw Brydydd, three 'englynion' from 'Llyfr Hir Llanharan', and an 'englyn' attributed to Siôn y Cent; 65-94, transcripts of miscellaneous Welsh verse including a series of twenty-two stanzas with the superscription 'Llyma'r Englynion a fu rhwng Trystan ab Tallwch a Gwalchmai ab Gwyar . . . ', 'Casbethau Arthur', stanzas from the 'Black Book of Carmarthen' attributed to Taliesin, a sequence of twenty-seven stanzas ('Gwasgargerdd Merddin yn ei Fedd') attributed to Myrddin ab Madawg Morfryn, a 'marwnad' attributed to Gruffydd Llygad gwr, a four-line 'darogan' attributed to Peredur Fardd, thirty stanzas from the 'Red Book of Hergest' entitled 'Ymatreg Llywelyn a Gwrnerth', forty-four stanzas with the superscription 'Tribanau yr Eiry Mynydd ar y mesur a elwir yr Hen Driban' attributed to Mab claf ab Llywarch or Llywarch Hen, and a further series of twenty stanzas with the superscription 'Llyma Englynion Eiry Mynydd eraill . . .' attributed to Ystyffan Bardd Teilo or Talhaiarn; 97-101, a list of the twenty-four traditional Welsh accomplishments ('Y Pedair Camp ar hugain'); 103-24, transcripts of 'cywyddau', etc., attributed to Bedo Philip Bach, Howel Dafydd ab Ieuan ab Rhys, Gr. Hiraethog, Siôn Mawddwy, Dafydd ap Gwilym, Trehaearn Brydydd Mawr, and Gutto'r Glynn, and of a series of 'englynion' to commemorate the year of accession of every English monarch during the period 1067-1558, these last being attributed to Berud ap yr Ynad Coch, Bleddyn Ddu, Cynddelw Brydydd Mawr, Llywelyn Fardd, Dafydd y Coed, Harri Haram Param, Llefot Wynebcolawr, Cyssymdaith Llefot Wynebcolawl, Mabwaith Hengrys o Ial, Llygad Gwr, Llywelyn ap Hywel Wrnerth, Gwilym Ddu 'o Arfon', Dafydd Bach ap Madoc Gwladaidd, Hywel Ystorun, Daniel Llosgwrn Marw, Dafydd Eppynt, Ieuan Brydydd Hir, Bleddyn ap Ieuan Hen, D. ddu, Ierwerth Fynglwyd, Rhys Nanmor, Hywel ap Bleddyn Mathew, Owain y Bardd 'o Wynedd', and Huw Arwystli; 129-35, a list of mainly Welsh authors who had written about the island of Britain ('am holl ynys Brydain') and of Welsh bards who had written of the three regions of Wales ('tair talaith Cymru'), etc.; 137, receipts for making ink; 138-9, transcripts of the Lord's Prayer in Welsh as versified by Dafydd Benwyn, and of 'englynion' attributed to Thos. Llen. 'o Regoes', Daf. o'r Nant, and Iolo Morganwg; 140-50, a transcript of a letter from Dafydd Tomas from Pandy'r Ystrad to Dafydd Rhys touching upon the course of the Reformation and the rise of Nonconformity in Glamorgan and mentioning Rhawlins White, Siôn Penri, William Erbri, and Walter Cradoc, and a translation of the Bible into Welsh by Tomas Llywelyn 'o Regoes' (the text of this letter was published in L. J. Hopkin James and T. C. Evans: Hen Gwndidau, Carolau, a Chywyddau . . . (Bangor, 1910), pp. 207-13; for doubts as to its authenticity and the opinion that it was composed by Edward Williams himself see TLLM, tt. 127, 245); 151-3, an anecdote relating to Gwilym Hir Saer and three stanzas in the 'triban' measure attributed to him; 154-64, two versions of 'Dengair Deddf y Beirdd' or 'Dengair Deddf Beirdd y Cymry' (published in James and Evans: op. cit., pp. 199-207); 165-74, a transcript of a letter from Dafydd Nicolas ? of Aberpergwm from Glyncorrwg to Edward Han of Aberdar, 1754, in which the writer gives his views on the relative merits of Welsh strict- and free- metre verse (the text of the letter was published in Taliesin . . ., cyf. I, 1859-60, tt. 92-5; for doubts as to its authenticity and an opinion that it was composed by Edward Williams himself see TLLM, tt. 241, 290-92); 175-6, a short chronicle of events in Welsh history, 1221-1419; 177-216, transcripts of Welsh poems attributed to Howel ab Owain Gwynedd, Casnodyn Fardd, ? Cynddelw, ? Teulu Owain Cyfeilyawc, Prydydd y Moch, Meilir Brydydd, Bleddyn Fardd, Llywelyn Fardd, Taliesin, Rhobin Ddu, Y Bergam o Faelor, Ieuan Trwch y Daran, D. ab Edmund, Ieuan Tew Hen, and Lln. ap Guttun, and miscellaneous extracts; 217, a copy of the prophecy of Friar Bacon ('Prophwydoliaeth y Brawd a elwid Ffreier Bacon'); (continued)

218-21, miscellanea including transcripts of two 'englynion' attributed to Sir Huw Dafydd and Thomas Powel, and a list of the cantrefi and cymydau of Morganwg 'ex Havod MS.'; 222-4, miscellaneous domestic and medicinal recipes; 243-5, a copy of a foreword reputedly written by Benjamin Simon in 1754 to a collection of the poems of Dafydd ap Gwilym; 246-52, transcripts of Welsh poems attributed to Ieuan Tew o Gydweli and Edward Llwyd; 253-5, a list of castles in Britain ('Caerau Ynys Prydain sef y Prif Gaerau'); 255-69, transcripts of miscellaneous 'englynion', three triads, and poems attributed to Siams ab Harri 'o Euas' and Gruffudd ap Ieuan ap Llywelyn Fychan; 270-87, transcripts of series of 'sayings', proverbs, triads, etc., with the superscriptions 'Saith gamp a ddylai fod ar wr', 'Saith ymofynion a'u hattebion', 'Geiriau Gwir Cattwg Ddoeth', 'Gorddodeu Cattwg ddoeth', 'Gorddodeu'r Hen Gattwg o Ial', 'Synnidau Cattwg Ddoeth', 'Trioedd amrafaelion', 'Diarhebion amrafaelion', 'Diarhebion Cenhedlig a Lleol', 'Llyma Ddiarhebion Tymmor a Thywydd', and 'Diarhebion Meddygol'; 287-95, a sequence of fifty-three stanzas entitled 'Englynion yr Eira Gwyn ar Ddiarhebion'; 296-323, transcripts of miscellaneous Welsh prose and verse items including prose items headed 'Llyma wyth llawenydd y Nef', 'Llyma Rinwedd y Ceiliog', 'Cas Betheu gan Dduw', 'Wyth o Drioedd', 'Naw Gradd yr Awgrym', 'Naw gradd Carrenydd', 'Llyma y pum achos sydd i gadw achau', 'Nodau Rhifyddiaeth yr Hen Gymry', 'y Llythyrenau Cymreig Hen a Newydd', 'Tri chynghor a roddes Iesu Grist iddei Ganlynwyr', 'Enwau Ynys Prydain a'i Rhag ynysoedd a'i chaerydd', and 'Hwedl Rhitta Gawr', 'englynion' attributed to Dafydd Benwyn 'o Forganwg', Edward Dafydd 'o Fargam', and Ieuan Gethin ab Ieuan ab Lleison, twenty-six stanzas attributed to Rhys Llwyd Brydydd 'o Lanharan', and verse attributed to Merddin Emrys, Taliesin, and Goronwy Owain; 324-438, transcripts of Welsh poems, mainly 'cywyddau', attributed to Iolo Goch, Gwilym ab Ieuan Hen, Rhys ab Cynfrig Goch, Dafydd ab Edmwnd, Iorwerth Fynglwyd, Thomas Llywelyn, Lewys Môn, Rhys Nanmor, Huw Cae Llwyd, Rhys Goch 'o'r Eryri', Siôn Philib, William Llyn, Rhisiart Fynglwyd, Rhys Llwyd ab Rhys ab Rhisiart, Meredydd ap Rhys, Ieuan Du'r Bilwg, Siôn y Cent, Ieuan Cae Llwyd, Tudur Aled, Syr Owain ab Gwilym, Owain Gwynedd, Taliesin, Dafydd Llwyd ab Llywelyn ab Gruffydd 'o Fathafarn', and Siôn Mowddwy; 439-42, transcripts of items with the superscriptions 'Gweddi Talhaearn . . .', 'Y Deuddeg Prif Gynnegolion . . .', 'Llyma Bennill Cadair Gorsedd Alban Arthan', 'Llyma Weddi'r Orsedd', and 'Cylch Byd a Bywyd', and examples of the strict metre known as 'gorchest y beirdd'; 459-95, transcripts of poems attributed to Dafydd ap Gwilym and some unattributed poems; 555-65, three sequences of stanzas (16, 13, and 8) with each verse commencing 'Coronog Faban' attributed to Aneurin Gwawdrydd or Gildas ap y Caw, Jonas Athraw Mynyw, and Rhys Goch 'o Eryri', with comments on the three series; 566, transcripts of four stanzas of Welsh strict-metre verse attributed to Rhys Llwyd and Iorwerth Fynglwyd; 571-86, a version of the statute relating to Welsh bards and musicians associated with the names of Gruffudd ab Cynan and Bleddyn ab Cynffyn; 587-9, notes relating to an 'eisteddfod' held by Rhys ab Gruffydd in Cardigan and rules formulated relating to the bards and 'eisteddfodau'; and 590-626, transcripts of miscellaneous Welsh prose and verse items including notes headed 'Llyma fal y dychre Dosparth ar Gelfyddyd cerdd dafawd yn Llyfr Iago ab Dewi', series of triads with the superscriptions 'Llyma Drioedd o hen Lyfr Tre'r Eos', 'Llyma Drioedd Gwilym hir, saer Hopkin ap Thomas ab Philip', and ['Trioedd] o Lyfr y Dr. Williams o Gaernarfon', Welsh poems attributed to Taliesin, Iorwerth Beh, Mabclaf ab Llywarch, and ? Daniel Llosgwrn Mynyw, a version of the bardic statute associated with the name of Gruffudd ap Cynan, prose items with the superscriptions 'Llyma Gasbetheu Doethion Rhufein', 'Dewisa Gwr nid amgen', 'Saith rhodd yr Yspryd Glan', 'Llyma Ddewisolion Dafydd Maelienydd', and 'Dewisolion Hywel Ystoryn', and an anecdote relating to Huw Llwyd Cynfel, brother of Morgan Llwyd 'o Wynedd'.

A volume containing transcripts of Welsh verse in strict metre (consisting mainly of 'cywyddau') transcribed, October [18]89 - February [18]90, by I[saac] F[oulkes] [newspaper proprietor and publisher]. Many of the poems are annotated to indicate that they were copied out of a volume in the possession of 'W.J.' of Llangollen, and the whole work appears to be an incomplete transcript of NLW MS 670D, which itself consists of a collection of Welsh poems transcribed by William Jones ('Bleddyn'), antiquary, local historian, etc., of Llangollen. The poets whose work is represented include Gwerfil Mechain, Howel Dafi alias Hywel ap Dafydd ap Ieuan ap Rys (Bardd Raglan), Sion ap Phelppot, Robert ap Dafydd Llwyd, Iorwerth Fynglwyd, Dafydd Llwyd ap Llywelyn ap Gruffydd (o Fathafarn), John ap Howel ap Tudur, Huw Cae Llwyd, Lewys Daron, Bedo Brwynllys, ? Gruffydd ap Ieuan Fychan, Syr Rhys o Garno, Morus ap Hywel ap Tudur, Gruffydd Hiraethog, Huw Llwyd Cynfael, Ifan Tew, Dafydd Nanmor, Cadwaladr Cesail, Huw Ifan ap Huw (o'r Bryn bychan), John Ifan, Rhisiart Cynwal, Huw Machno, Syr John Leiaf, Huw Pennant, Rhys Nanmor, Sion Dafydd Penllyn alias Sion Dafydd Las alias y Bardd Meddw (o Nannau), Syr Dafydd Owain, Gruffydd ab Ieuan ab Llewelyn Fychan, Hywel Cilan, Lewis Môn, Hywel Gethin, Efan ab Gruffydd Leiaf, Watkyn ab Risiart, Hywel ap Reinallt, Mathau Bromffield, Watkyn Clywedog, William Lleyn (Bencerdd), William Cynwal, Simwnt Fychan (Bencerdd), Euan Llafar, Thomas Prys (o Blasiolyn), William Vaughan, Huw Arwystli, Sion Phylip, Richard Phylip, Ifan Dyfi, Lewis Menai, Dafydd Owen, and Llewelyn ap Gutyn. A note on p. 123 indicates that three 'englynion' by [Thomas Edwards] 'Twm o'r Nant', which were to be found at this point in W[illiam] J[ones]'s volume [NLW MS 670D], had not been copied by the transcriber, as he intended including them in a proposed new edition of that poet's works, to be published by him in 1889. A second note on the same page indicates that, similarly, fourteen 'cywyddau' by Tudur Aled had not been transcribed in the present volume, but had been copied into another book, with the intention of publishing these and other poems by the same bard, together with poems by Guto'r Glyn and Sion Tudur. In fact, fourteen 'cywyddau' and four other poems by Tudur Aled, and all of the poems by Guto'r Glyn and Sion Tudur, which appear in NLW MS 670D, have been omitted from the present volume, the presence of poems by the two latter bards in NLW MS 670D being usually indicated by the transcriber by quoting the title, or title and first line, of such works. A note on p. 153 states that eighty ' cywyddau' by Dafydd ap Gwilym [which appeared in William Jones's book, i.e ., NLW MS 670D, pp. 149-263], had been used to correct the published edition of that poet's work ('Yma daw LXXX Cywydd o waith Dafydd ab Gwilym, y rhai a ddefnyddiwyd i gywiro ei waith argraffedig'). These eighty poems, and also five retaliatory poems composed by Gruffydd Grug, in a poetic contention with Dafydd ap Gwilym, and found interspersed among the eighty 'cywyddau', have been omitted from the present volume. A further note on p. 264 states that the last three 'cywyddau' [in NLW MS 670D] had not been copied, as the transcriber believed the text to be so corrupt, that they did not merit transcription. A fly-leaf is marked 'Bk i', and this possibly connects the volume with NLW MS 19313, which, marked on a fly-leaf 'Bk ii', consists of a similar volume of Welsh verse transcribed, March - April [18]90, by I[saac] F[oulkes], again, by inference, from a book in the possession of W[illiam] J[ones].

A composite volume containing transcripts by Edward Williams ('Iolo Morganwg') of Welsh poems, mainly strict-metre verse in the form of 'cywyddau', attributed to Syr Dafydd Owain, Huw Dafydd Llwyd, Ieuan ap Hywel Swrdwal, Llawdden, Dafydd Llwyd Matthew, Siôn Mowddwy, Rhobin Ddu 'o Fôn', Siôn Tudur, Syr Dafydd Llwyd Fach or Syr Dafydd Llwyd Ysgolhaig, Lewis Glyn Cothi, Huw Pennant, Rhosser Cyffin, Person Llanberis, Dafydd ap Dafydd Llwyd, Thomas Prys, Rhisierdyn, Gutto'r Glynn, Meredydd ap Rhys, Rhys Goch Glyndyfrdwy, Siôn Brwynog, Thomas Celli, Llywelyn Goch ap Meuryg Hen, Rhys Cain 'o Groes Oswallt', Rhisiart Philip, Rhys Llwyd ap Rhys ap Rhiccart, Hywel ap Syr Mathew, Gruff. Hiraethog, Edmund Prys, Arch[d]diacon Meirionydd, Gruffudd Hafren, Rowland Fychan 'o Gaer Gai', Ieuan Llwyd Sieffre, Ieuan Tew Brydydd, Owain ap Llywelyn Moel, Lewys Môn, Dafydd Pennant, Rhys Goch ap Dafydd sef Rhys Goch Eryri, Tudur Aled, Ieuan Brydydd Hir, Siôn Philip, Lewis ab Edward Bencerdd, Wiliam Cynwal, Ieuan Deulwyn, Gruffudd ap Gweflyn, Lewys Menai, Dafydd Llwyd 'o Fathafarn', Dafydd ap Hywel, Ieuan ap Gruffudd Leiaf, Huw Arwystli, Rhys ap Llywelyn ap Gruffudd ap Rhys, Guttyn Owain, Hywel Dafydd ap Ieuan ap Rhys, Iolo Goch, Ieuan Llawdden, Wiliam Llyn, Gruffudd Gryg, Dafydd Llwyd ab Einion Lyglyw (or Gruffydd Llwyd ab Dafydd ab Einion Lygliw, or Dafydd ab Gruffydd Llwyd ab Einion Lygliw), Dafydd ab Gwilym, Lewys Morganwg (or Lewys Brydydd Hodnant), Rhisiart ap Rhys Llwyd, Iorwerth Fynglwyd, Thomas Derllysg, Dafydd, Abad diweddaf Margam, Siôn y Cent, Thomas Lleison 'o Gastell Nedd', Ieuan Du'r Bilwg, Llywelyn Moel y Pantri, Rhys Llwyd ab Rhys ab Rhisiart 'o Lan Haran', Ieuan Rudd, Gruffudd ap Ieuan ap Llywelyn Fychan 'o Lannerch Llyweni', Meredydd ap Rhosser, Tudur Penllyn, Dafydd ap Edmwnd, Ieuan Brechfa, Syr Owain ap Gwilym, Bedo Hafes, Syr Rhys o Garno, Dafydd Llwyd ab Llewelyn ab Gruffydd, Llywelyn ab Guttyn, Trahaiarn Brydydd Mawr, ? Iorwerth Beli, Llywelyn Goch y Dant, Wiliam Pywel 'o Gastell Madog', Dafydd y Coed, Ieuan Môn Hen, Gruffudd ab Gronw Gethin, Meyrig Dafydd, Wiliam Byrcinsha, Syr Dafydd Trefor, Bleddyn Siôn 'o Lancarfan', Casnodyn, Syr Rhys Offeiriad, Llywelyn ap Guttyn, Ieuan Gethin ab Ieuan ab Lleison, Syr Dafydd Jones, Ficcer Llanfair Dyffryn Clwyd, Ifan Llwyd, and Siôn ap Ffelpot. There are occasional notes on the poems and poets and on the source of the transcript.

A transcript by William Jones ('Bleddyn'), Llangollen of 'cywyddau' and 'englynion', etc. by Gwerful Mechain, Hywel Dafi [Hywel ap Dafydd ab Ieuan ap Rhys], Sion ap Philpot, Robert ap Dafydd Llwyd, Gruffudd Leiaf, Iorwerth Fynglwyd, Dafydd Llwyd ap Llywelyn ap Gruffudd, Sion ap Hywel ap Tudur, Huw Cae Llwyd, Lewis Daron, Bedo Brwynllys, Syr Rhys o Gar[no], 'Twm o'r Nant' [Thomas Edwards], 'Person Llangwm', Tudur Aled, Morys ap Hywel ap Tudur, Gruffudd Hiraethog, Huw Llwyd Cynfal, Ieuan Dew Brydydd, Dafydd ap Gwilym, Richard Cynwal, Huw Machno, Syr John [Sion] Leiaf, [Sir] Huw Pennant, Rhys Nanmor, Sion Dafydd Lâs [John Davies], Syr Dafydd Owain, Gruffudd ab Ieuan ap Llywelyn Fychan, Hywel Cilan, Sion Tudur, Lewis Môn, Hywel Gethin, Ieuan ap Gruffudd Leiaf, Watcyn ap Rhisiart, Hywel ap Rheinallt, Mathew Brwmffild, Guto'r Glyn, Watcyn Clywedog, Wiliam Llŷn, Wiliam Cynwal, Simwnt Fychan, Ieuan Llafar, Thomas Prys, William Vaughan, Huw Arwystli, Sion Phylip, Richard Phylip, Ieuan Dyfi, Lewis Menai, Rhys Goch Glyndyfrdwy, Llywelyn ap Gutun, Madog Leiaf and Ieuan ap Rhydderch, with 'englynion' by Dafydd Nanmor, Cadwaladr Ces[ai]l, Huw Ifan ap Huw ('o'r Brynbychan') and Siôn Ifan.

A composite manuscript lettered 'BARDDONIAETH &c.' on the spine. The volume, which contains 'englynion', 'carolau' and pedigrees, is written for the most part (ff. 1-52 verso and 75 verso-101 verso) by Wiliam Dafydd Llywelyn of Llangynidr (c. 1520-1606) (cf. NLW MS 15542B). Another hand is responsible for ff. 53- 75, but Wiliam Dafydd Llywelyn appears to have annotated this middle section. Folio 6 verso carries an eighteenth century list of payments, and folio 7 verso is blank. The contents are: ff. 1-2 verso, part of the story of 'Trystan ac Esyllt' (cf. 'englynion' 9 to 28 in Ifor Williams, 'Trystan ac Esyllt', The Bulletin of the Board of Celtic Studies V, pp. 118-21); ff- 3-5v, a religious carol beginning 'hanpych well y gaua[. . .] . . .', with each stanza ending 'ora tu pro nobys'; f. 6 recto-verso, 'englynion': one by Huw Arwestl beginning 'medru tewi weithie yes medria[d] [sic] gydwedd . . .', as well as three written in praise of the song-thrush by Dauydd llwyd Mathe, 1581, Dafudd Benwyn, and Wm Mydleton; f. 8 recto-verso, a short extract of religious prose beginning 'Jessv grist yn keidwad y godoedd o feirw y fyw . . .'; f. 8 verso, an 'englyn' 'pen ddarffo rifo y ryfic, ymgais . . .'; ff. 9-46, 'Dyma englyn[ion ] . . .', a series of 226 'englynion' based on proverbs and epigrams, the first beginning '[D]auparth gwaith ganwaith rag wynebdychryn . . .', 'per Tho[mas] ap Hughe de Ewyas', the epigram or proverb is rubricated oftener than not; ff. 46 verso-48, '[ ] englynion y datts', beginning 'dau .cc. a v. mil digwyn / ont dayfis . . .'; f. 48 recto-verso, five 'englynion' beginning 'Un sir ar bymtheg medd sain / lliwgalch . . .'; ff. 49-51, a series of nineteen 'englynion' recording the accession dates of the kings and queens of England between Henry II and Elizabeth I, beginning 'pymp deg pedwar teg myn tain / ywch ka[nt] . . .'; ff. 51 verso-52, eight stanzas beginning 'hawdd o beth y[w] nabod cwilsen . . .'; f. 52, two 'englynion' beginning 'mi a gaf y geisaf fal negeswr / dof . . .'; f. 52, a 'hir a thoddaid' beginning 'Rag Kythrel anfwin . . .'; f. 53, the six last lines of a carol ending 'am y fordd [sic] y gorfydd myned'; ff- 53-73, a long carol based on biblical and historical events, entitled 'Iacob 4 Glanhewch ych dwylaw bechadurieit a phurwch ych calonaw [sic] dauddyblug feddwl', beginning ' fal iroeddwn i n effrv . . .'; f. 73 verso, five stanzas beginning 'Dues wyn diwad . . .', with the following note accompanying the text 'ymofynnrvch am ddiwedd hyn yma yn well o rhyw goppi arall oscat vidd nid oedd ef yn cesio oddli ne ni fedrei Amendiwch y dywaetha fal hyn i odli os mwnwch'; f. 74 recto-verso, lines in the 'cywydd' metre beginning 'Rhown moliant gan tant bob didd . . .'; f. 74 verso, an 'englyn' based on Mat. [xxiv, 35.], beginning 'Nef a daear wfir o wall / a dderfydd . . .'; f. 75, an 'englyn' by Simwnt Vychan beginning 'Pumptheccant gwyddant y gost / a decwyth . . .'; f 75, two 'englynion' by Da[vid] Johns beginning 'Mil a hanner noder yn wiwdec cynnwys . . .'; f. 75 verso, three 'englynion' beginning 'pwy ywr mares garw a gyrydd myrain . . .'; ff. 76-80, a description of arms of Welsh nobles entitled 'Dysgrifiad arfey y bryttan[ied] o vryttys hyd heddiw'; ff. 80 verso- 82, 'Disgliriad [sic] pob gwlad yn neilltyedic o waith Einion ap gwawdrydd mewn englynion', beginning 'Gnawd yngwynedd fokyssedd eirey . . .', [ usually attributed to Aneurin Gwawdrydd]; f. 82 recto-verso, seven 'englynion' of a prophetic nature beginning 'pan welych yr ych mawr ychod / antyrys . . .'; f. 83, a short English prophecy beginning 'Take hyd of Seuen . . .'; f. 83, a list of characteristics attributed to twelve areas of Wales and the Marches in which they surpass others, beginning 'Pen Bonedd Gwynedd'; and ff. 83 verso-101 verso, a list of pedigrees of noble Welsh families entitled 'llyma Betigriw y bryttanied' beginning 'llywelyn ab Gryffydd ap ll ap lorwerth drwyndwn ap Owain gwynedd . . .', continuing f. 84 'llyma Iach bryttys', f. 85 'Rodri Mawr ap merfyn frych . . .', f. 85 verso 'Plant Owein Gwynedd', f. 93 'llyma Wahelyth Deheybarth', f. 94 'kedewen', f. 99 'Dyma arfav Rys ab Morys goch . . .', f. 100 verso 'llyma Iach bleddyn ab kynfyn;, f. 101 'llyma bedwar post prydain', f. 101 'llyma Iach yr arglwydd Rys', and f. 101 verso 'llyma Iach Gryffydd ab kynan' (incomplete).

Transcripts by Ioan Pedr and others of 'cywyddau' and other poems by Wiliam Llŷn, Guto'r Glyn, Siôn Brwynog, Dafydd Llwyd ap Llywelyn ap Gruffudd, Llywelyn ap Gutun [ap Ieuan Lydan], Huw Arwystli, Wiliam Cynwal, Siôn Tudur, Edmwnd Prys, Ellis [ab] Ellis ('gweinidog Eglwys Rhos a Llandudno'), [Rhisiart] Phylip, Humphrey Owen, [Sion] Rhydderch, Dafydd Manuel, John Pritchard, Dafydd Jenkins, Robert Thomas, Twm Simon and Rowland Jones ('Roli Penllyn'); a copy of the charter granted to Pwllheli, 1423; and a copy of a letter, February 1812, from John William Prichard, Plas y Brain, Anglesey to William Roberts.