A volume containing mainly pedigrees of North and South Wales families written by two principal scribes of the circle of George Owen of Henllys, Pembrokeshire.
(a) Pages 1, 7-209, 223-232, 239-256 and possibly 372-373 are written by a scribe who, although experienced in penning a good secretary hand and in executing ornate headings, is often inaccurate in his transcription of Welsh personal and place-names; he also wrote the line 'Owain ap Gruffith /i/ gelwid Gwinn ap Gr: yn jawn' on p. 41, in italic (examples of the same italic hand are found in the margins of pp. 19, 66, 113, 355, 356, 361 and elsewhere). This section comprises a collection of pedigrees mostly of North Wales families, including 'Bonedd y Saint' (pp. 84-90); the prose text 'Pedwar Marchog ar Higen oedd yn llys Arthur' (end wanting) (pp. 37-38); the dates of battles in the 'Wars of the Roses' (pp. 31, 208); five englynion, including one by Richard Davies, bishop of St Davids (p. 1), and other englynion dispersed among the pedigrees (pp. 57, 78, 92, 114-115, 170), together with the series of forty englynion entitled 'Campod Manuwel' (pp. 223-232); and the prose piece 'Disgrifiad Arfau', a Welsh translation of the heraldic treatise 'Tractatus de Armis', attributed to John Trevor, bishop of St Asaph (pp. 239-256). The ultimate source of this section is the collection of pedigrees and other texts written, [c. 1510], by 'Syr' Tomas ab Ieuan ap Deicws in Peniarth MS 127 (see p. 53); however, internal evidence suggests that the scribe was copying from the transcript of Peniarth MS 127 in NLW MS 17112D rather than directly from the original (see p. 104, where he begins copying the note 'Darfu examinatio y llyfrev newydd hyd yma' which occurs on f. 66 verso of NLW MS 17112D, before he realized his mistake). Both Brogyntyn MS I.15 and NLW MS 17112D preserve the original order of the text of Peniarth MS 127, which has been subsequently disarranged in binding. (b) Pages 211-212, 269-371, 374-411 are written by another experienced scribe whose display script is almost indistinguishable from that of the first scribe. These pages contain pedigrees mostly of South Wales families and include two copies of 'Llyma enway Kwnkwerwyr y rhai a vyant yngwlad Vorgannwg ay harfay' (pp. 280, 361-362), a third containing merely a short list of the conquerors' names (p. 310), and two copies of 'Llyma achoed Saint ynys Brydain' [= 'Bonedd y Saint'] (pp. 363-365, 385-386). The text on pp. 211-212, as indicated by a note in the hand of George Owen of Henllys at the head of p. 211, was copied in 1596 from the manuscript of 'Hyw Lewis Sr morgan' of Hafodwen, Carmarthenshire, which 'D'd ap Ienkin m'edd o Vachynlleth' wrote in 1586; the original is now NLW MS 3055D (Mostyn MS 159), pp. 232-233. The text on pp. 271-343 is partly derived from a manuscript written in 1513 by the Carmarthenshire poet and genealogist Ieuan Brechfa for 'Mastr John ap Henry ap Rees', with some of the pedigrees brought down to the second half of the sixteenth century; Ieuan Brechfa's manuscript does not seem to have survived; it is not Peniarth MS 131, pp. 199-308, which is thought to be in his hand. The source of pp. 345-411 is unknown, although the text on pp. 347-365 follows very closely that in Peniarth MS 143, pp. [?1-3], 4, 47-48, 7-19, 33-46, 49-52, written by the same mid-sixteenth century scribe who wrote many of the religious texts in Cardiff Central Library Havod MS 22. A leaf containing a prophecy in English verse, written in a late-sixteenth century hand, has been tipped in after the main text (pp. 413-414).

An index, prepared by Walter Davies, of proper names, mainly Welsh personal and place-names; englynion and other poems; and miscellaneous notes.

'Llyfr Cowyddeu i Mr. William Wynn o Langoed yn sir fon'. 'Y Llyfr hwnn a scrifennodd William Davies Curat or plwy yn y flwyddyn o oedran yr Arglwydd: 1642'. It contains 'cywyddau', 'awdlau', and 'englynion' by Sion Cent, Iolo Goch, Syr Owain ap Gwilym, Syr Dafydd Trefor, Sion Phylip, Dafydd ap Gwilym, Ieuan ap Gruffudd Leiaf, Dafydd Nanmor, Llywelyn ap Hywel ab Ieuan ap Gronw, Edmwnd Prys, Huw Cowrnwy, Dafydd ap Dafydd Llwyd, Maredudd ap Rhys, Gruffudd Llwyd ap Dafydd ab Einion, Sianckyn ab Eingan, Llywelyn ab yr Ynad Coch, Sion Tudur, Morys ap Hywel ap Tudur, Sion ap Hywel ap Llywelyn Fychan, Huw Roberts, Morgan ap Huw Lewis, Sion Brwynog, Morys Llwyd, Hyw Arwystli, Lewis Morganwg, Dafydd Llwyd ap Llywelyn ap Gruffudd, Lewis Daron, Rhys Nanmor, Hywel ap Dafydd ab Ieuan ap Rhys, William Egwad, Hywel Swrdwal, Tudur Aled, Lewis Glyn Cothi, Lewis Môn, Rhys Goch Glyndyfrdwy, Guto'r Glyn, Gruffudd ab Ieuan ap Llywelyli Fychan, Wiliam Myddelton, Bedo Brwynllys, Wiliam Llyn, Lewis Menai, Simwnt Fychan, Llywelyn ap Gwilym ap Rhys, Richard Cynwal, Rhys Cain, Gruffudd ap Tudur ap Hywel, Sion Ceri, Robert ap Dafydd Llwyd, Syr Roland Williams, Gruffudd Hiraethog, Wiliam Cynwal, Morys Dwyfech, Rhys Goch Eryri, Roger Cyffin, Gwilym ap Sefnyn, Ieuan Dew Brydydd, Thomas Prys, Gruffudd Llwyd, Dick Hughes, and the transcriber.

Transcripts, mainly by Richard Lloyd, minister of the Welsh Calvinistic Methodists at 'Beamaris' about 1818, of cywyddau, englynion, odes, and carols by John Roberts (Sion Lleyn) and Rhisiart William Dafydd, and transcripts of letters to Richard Lloyd relating to Welsh Calvinistic Methodist affairs in Anglesey, 1828-1834.

'Cywyddau' and 'englynion' by Ellis Rowland, Syr Dafydd Trefor, Thomas Prys, John Davies, Siôn Tudur, Edward Morus, Rowland Price, Wiliam Phylip, Gruffudd Prys, Owen Gruffydd, Dafydd ap Gwilym, Cadwaladr Cesel, John Roger, Huw Morus, Dafydd Manuel, Richard Abram, Mathew Owen, Edward Williams, William Wynn, Margaret Davies, Rhys Jones, Hugh Hughes, and E[dward] Wynne, [Gwyddelwern].

Diary, 1845, including impromptu englynion written by Joseph Jenkins at the beginning of the volume after he and his two friends were denied an entry into the Chapel of St. David's College [Lampeter] because of their rustic dress. The englynion were later published in Dan Jenkins (editor), Cerddi Cerngoch (Lampeter, 1904).

'Diferyn Difyrrwch neu ganiadau plygeiniol er coffadwriaeth am ymddangosiad Duw yn y cnawd', being a collection made by G. C. Griffith of 'englynion', 'carolau', and other poems by Robert Hughes (Neuadd y blawd), William Griffith ('Gwilym ab Gryffydd', 1794), John Thomas (Pentrefoelas, 1800), David Owen ('Dewi Wyn o Eifionydd'), G. C. Gryffydd (1816), and Richard Jones (Trefdraeth).

Copïau, [1920au], mewn llaw anhysbys, o chwe englyn gan Robert Owen Hughes (Elfyn), sydd yn ddetholiad o'r gerdd 'Addef ac Ymbil' a gyhoeddwyd yn Y Traethodydd, 60 (1905), 89-90 (f. 1 recto-verso). = Copies, [1920s], in an unknown hand, of six englynion by Robert Owen Hughes (Elfyn), being a selection from the poem entitled 'Addef ac Ymbil', published in Y Traethodydd, 60 (1905), 89-90 (f. 1 recto-verso).
Cynhwysir hefyd y ddau englyn ar garreg ei fedd yn Llan Ffestiniog, sef un o'i waith ei hun, a'r llall o waith Eifion Wyn (f. 1 verso). = Also included are the two englynion inscribed on Elfyn's tombstone at Llan Ffestiniog, one of his own composition, and the other by Eifion Wyn (f. 1 verso).

A volume, 1855 (watermark 1845), in the hand of John Hughes, Llanerchymedd, Anglesey, containing transcripts of letters and poetry, and other texts.
The volume contains items apparently copied from an untraced manuscript of John William Prichard (ff. 1 verso-25 verso), including transcripts of seven letters, 1751-1757, from Goronwy Owen to William Morris (ff. 2-20 verso, Welsh, English), and one, 1741, from Goronwy Owen to Owen Meyrick (ff. 21-22 verso, Latin, English), all of which appear in The Letters of Goronwy Owen (1723-1769), ed. by J. H. Davies (Cardiff, 1924); a transcript of a letter, 1806, from William Owen-Pughe to Prichard (f. 25 recto-verso); Goronwy Owen's Latin poem 'On Captain Thomas Ffoulkes' Escape…' (ff. 23-24); and englyns in Latin, English and Welsh by Edward Morris (f. 24). The volume also contains a copy of a poem ascribed to Robert Duke of Normandy but probably written by Iolo Morganwg (see The Gentleman's Magazine, 76 (1794), 981) (ff. 26 verso-27); a translation into English [by John Hughes] of the poem 'Y Gorwynion' (ff. 27 verso-31); a list describing the parish churches of Anglesey and their founders (ff. 68-74 verso); and descriptions of the Fifteen Tribes of North Wales (and a few others), with the blazons of their arms (ff. 76-81 verso). Items found loose within the volume (7 ff.) have been tipped in on blank leaves (ff. 32-34, 83), with the exception of a copy, 1799, by John William Prichard, of the poem 'Yr Eneth o'r Bryn', said to have been translated from English by Goronwy Owen (see Alan Llwyd, Gronwy Ddiafael, Gronwy Ddu: Cofiant Goronwy Owen 1723-1769 (1997), p. 58), which is loose at the end of the volume (f. 137).

Notebook of Joseph Jenkins, [1869]-1887, containing his poems including 'The Swagman's Complaint', 'Our Age is only a Race for Life', Victoria, 1871; englyn 'Y ddanod' (toothache); two verses which he composed on the request of his daughter Elinor to commemorate his two sons Jenkin and Lewis who died in their twenties; verses to congratulate Caradog and his choir on their success in 1873; a poem in memory of his friend Ioan Mynyw [John Lewis], 1873; a number of poems written by him as a patient in Maryborough Hospital, 1874, and on leaving; and four lines, 1887, written after the death of his daughter Margaret in 1883.

Journal of Rev. Henry Richard concerning a tour in North Wales, October [1847] (watermark 1842).
The volume comprises a diary kept during a week of sightseeing and preaching, travelling from Bala, Merioneth, to Llandudno, Caernarvonshire (ff. 4-9 verso), and including a copy of an englyn by an unknown author (possibly Richard himself) (f. 8), together with notes for sermons on Biblical texts which were probably delivered during the tour (ff. 10-26 verso, inverted text).

'Carolau', 'cerddi', 'cywyddau', and a few 'englynion', most of them transcribed by John Beans. Among the poets represented are Huw Morus, Edward Morus, Ellis Cadwaladr, Edward Samuel, Robert Hwmffres, Dafydd Morus, Gruffudd Edward, Mathew Owen, Robert Sion Owen, Ellis Rowland, Edward Rowland, William Roberts, Jonathan Hughes, William Thomas, Richard Abraham, Cadwaladr Roberts, Ned Lloyd ('o'r Bala'), Thomas William, Evan Thomas, Ellis Roberts, Arthur Jones ('o Langadwaladr'), John Jones, John Parry, Dafydd Puw Rowland, John Hughes, Ellis Roberts ('Elis y Cowper'), Morus Roberts, John Evans, Ellis ab Ellis, Thomas Jones, Derwas Griffiths, Rowland Hughes, Sion Hwmffre, Hugh Jones (Llangwm), John Cadwaladr ('o'r Bala gunt and ynawr athraw ysgol yn Llangwm'), - Lewis ('curad Cerrig y Drudion'), Lewis Morris ('Llewelyn Ddu o Fôn), Sion Tudur, Wiliam Phylip, John Davies ('Sion Dafydd Las'), Maredudd ap Rhys, etc.

'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.

Three music books bought by Isaac Williams 'of Mr. Parry, Relieving Officer, Dolgellau, Sept. 1903' and bound together into a single volume. They contain hymn-tunes, anthems and psalm-tunes, mainly by John Williams, Dolgellau, with a few tunes by R[ichard] Mills ['Rhydderch Hael'], one by I. R. Ellis, Dolgellau, 1841, and traditional and anonymous tunes; a poem entitled 'Amgylchiadau Marwolaeth Crist', an 'englyn' ('Y Farchnad Ysprydol'), 'englynion' by 'Shion Rhydderch', three hymns ('Mae'r gwaed a redodd ar y Groes', 7 stanzas, and 'Wrth edrych ar y sail', 4 stanzas, 'Ni'm diystyrir gan fy Nuw', 1 stanza), and a recipe for a cough.

Transcripts by Walter Davies of elegiac englynion by various authors on the death of David Owen (Dewi Wyn of Eifion), englynion eulogising Edward Mostyn Lloyd Mostyn, pedigrees and genealogical notes, replies to queries sent by Lady Charlotte Guest, letters, etc.

Dyddiadur T. Llew Jones ar gyfer 1978, sy'n cynnwys cofnodion yn ymwneud â'i ddiddordebau a'i fywyd bob dydd; ceir hefyd englyn ganddo (f. 27 verso). = Diary of T. Llew Jones, for 1978, giving an account of his daily life and interests, and also an englyn by the author (f. 27 verso).
Cynhwysa'r gyfrol gyfeiriadau at Dic Jones (passim), John Alun Jones (ff. 7, 22, 25-6, 45-7 verso, 52 verso-3), a phriodas Tydfor Jones (ff. 11 verso-14 verso); hefyd at lyfr canmlwyddiant Ysgol Gynradd Tregroes, Ceredigion (ff. 18 verso-43 verso passim). = The volume contains references to Dic Jones (passim), John Alun Jones (ff. 7, 22, 25-6, 45-7 verso, 52 verso-3) and Tydfor Jones's marriage (ff. 11 verso-14 verso); also to the centenary book of Tregroes Primary School, Ceredigion (ff. 18 verso-43 verso passim).

Dyddiadur T. Llew Jones ar gyfer 1981, sy'n cynnwys cofnodion yn ymwneud â'i ddiddordebau a'i fywyd bob dydd, gan gynnwys crynodeb o ddigwyddiadau ar gyfer 1980 (ff. 1 verso-7 verso), ac englynion gan yr awdur (f. 25) a Dic Jones (f. 67). = Diary of T. Llew Jones for 1981, giving an account of his daily life and interests, including a summary of events for 1980 (ff. 1 verso-7 verso), and englynion by the author (f. 25) and Dic Jones (f. 67).
Cynhwysa'r gyfrol gyfeiriadau at Dic Jones (passim), John Alun Jones (passim), llyfr yn seiliedig ar ddyddiaduron Joseph Jenkins (ff. 14, 26-37 verso passim, 60 verso), marwolaeth B. T. Hopkins (ff. 14-16, 21, 77 verso), dathliadau canmlwyddiant geni Dafydd Jones (Isfoel) (ff. 24, 45 verso-46, 51 verso-58), darlithoedd ar Dewi Emrys (ff. 40, 42, 45 verso-47 verso, 70-73 verso, 82 verso-83 verso), ac ympryd Gwynfor Evans (f. 3 verso); ceir hefyd gyfeiriadau at yr ymgyrch losgi tai haf (ff. 3 verso-4, 19 verso, 41, 72), a'r tywydd gwael ym mis Rhagfyr (ff. 105 verso-111 verso). = The volume includes references to Dic Jones (passim), John Alun Jones (passim), a book based on the diaries of Joseph Jenkins (ff. 14, 26-37 verso passim, 60 verso), the death of B. T. Hopkins (ff. 14-16, 21, 77 verso), centenary celebrations of the birth of Dafydd Jones (Isfoel) (ff. 24, 45 verso-46, 51 verso-58), lectures on Dewi Emrys (ff. 40, 42, 45 verso-47 verso, 70-73 verso, 82 verso-83 verso), and Gwynfor Evans's fasting protest (f. 3 verso); also included are references to the holiday homes arson campaign (ff. 3 verso-4, 19 verso, 41, 72), and the poor weather in December (ff. 105 verso-111 verso).

Dyddiadur T. Llew Jones ar gyfer 1993, sy'n cynnwys cofnodion yn ymwneud â'i ddiddordebau a'i fywyd bob dydd, yn ogystal ag englyn ganddo (f. 75). = Diary of T. Llew Jones for 1993, giving an account of his daily life and interests, together with an englyn (f. 75).
Cynhwysa'r gyfrol gyfeiriadau at Dic Jones (ff. 6 verso, 15 verso-16, 57 verso-78 verso passim, 96 verso), Carol Byrne Jones (ff. 40 verso, 51-52, 77 verso, 82, 101 verso, 106 verso), addasiad ffilm a chyfieithiad i'r Saesneg o Tân ar y Comin (ff. 60-69, 81-96, 101 verso, 103 verso), a chyhoeddi barddoniaeth Tydfor Jones (ff. 2 verso, 5-17 passim, 23-24, 31, 37 verso, 41 recto-verso, 54 verso). = The volume includes references to Dic Jones (ff. 6 verso, 15 verso-16, 57 verso-78 verso passim, 96 verso), Carol Byrne Jones (ff. 40 verso, 51-52, 77 verso, 82, 101 verso, 106 verso), a film adaptation and translation into English of Tân ar y Comin (ff. 60-69, 81-96, 101 verso, 103 verso), and the publication of Tydfor Jones's poetry (ff. 2 verso, 5-17 passim, 23-24, 31, 37 verso, 41 recto-verso, 54 verso).

Papurau Gwydderig, yn cynnwys ei farddoniaeth a deunydd perthynol yn cynnwys beirniadaethau eisteddfodol, torion o'r wasg, adysgrifau o'i waith a gohebiaeth, 1877-1917; ynghyd â barddoniaeth gan feirdd eraill yn cynnwys William Williams ('Myfyr Wyn', 1849-1900), a llyfr nodiadau ei frawd Benjamin Williams = Papers of Gwydderig, comprising his poetry and related material including eisteddfod adjudications, press cuttings, transcripts of his works and correspondence, 1877-1917; together with poetry by other poets including William Williams ('Myfyr Wyn', 1849-1900), and a notebook of his brother Benjamin Williams.