Two volumes in the hand of Mary Richards, Darowen consisting largely of transcripts of poetry from manuscripts then in the Llansilin Collection (e.g. Cwrtmawr MSS 204, 206-7, 227, 238, 242-3). Other transcripts in the collection are items from 'copy o un [o] lyfrau Maesglase, Mallwyd', including 'Merddin ai dywaid', 'Taliesin ai traethoedd', Merddin ai Traethodd', 'Taliesin ai Traethodd', and 'Merddin a Gwenddydd'. The poetry, in strict and free metres, is by Griffyth ap Dafydd Vychan, Robin Ddu, Dafydd Llwyd Llywelyn ap Griffydd, Owain Twna, Dafydd Gorllech, Ifan Brydydd hir, Huw Pennant, Edwart [ap Rhys], Dr. Sion Cent, Ie[uan] Dyfi, Iolo Goch, Meredydd ap Rhys, Llywelyn ap Owain, Rhys Coch or Eryri, Thomas Prys ('o Blas Iolyn'), Edmwnd Prys, G. Philip, W. Elias, Owain Gruffudd, Gruffudd Nannau, Owain Gwynedd, Gruffyth Hiraethog, Guto'r Glynn, Tudur Aled, Thomas Owen, William Llyn, Ieu[an] Tew, Tudur Penllyn, Huw kae Llwyd, Llywelyn Goch Amheurig hen, Dafydd Nanmor, Gruffydd Hafren, Syr Owen ap Gwilim, Sion Philip, Bedo Brwynllys, Morys Dwyfen (recte Dwyfech), Sion Tudur, Sion Philip, Llywelyn ap Gutun, Syr Rhys Carno, Wiliam Kynnwal, Gwilym ap Ieuan hen, Walter Davies ('Gwallter Mechain'), John Athelystan Owen, D. Parry, Rowland Parry ('Ieuan Carn Dochan' 'O Lanuwchllyn'), Evan Evans ('Ieuan Glan Geirionydd'), Roger Cyffin, [Morris Jones] ('Meurig Idris'), J. Blackwell ['Alun'], William Edward ('[Gwilym] Padarn'), Gruffydd Lloyd ab Dafydd ab Einion Lliglyw, Ifan ab Howel Swrdwal, Ifan Tudur Benllyn, Cathrin Sion, Gaynor Llwyd, Thomas Evan, Evan Thomas, Moris Richard, Hugh Sion, Huw Moris, Griffydd Moris Evan, Morys Robert, Sir Rees Cadwaladr, Edward Jones ('Vicar Machynlleth 1644'), Llywelyn Cadwaldr, Richard Llwyd, Shon Dafydd, William Puw Llafar, Lewis Môn, Huw Llyn, Rees Edennyfed [sic], Lewis Edward, William Edward, ? Robert Edward Lewis, Richard Philip, Rees Ellus, Gruffydd ab Gronwy Gethin, John Morgan ('Vicar Aber Conwy ... 1698'), Edward John ab Evan, John Rhydderch, Gwilim ab Sefnyn, John Davydd, John Vaughan ('o Gaer Gai'), [David Richards] ('Dafydd Ionawr'), Thomas Llwyd, Cadwaladr Roberts, Edward Rowland, Richard Abraham, Edward Morus, Hugh Lewis, Thomas Lloyd 'fiengca', Rowland Vaughan, [John Jones] ('Tegid'), Robert Davies ('Bardd Nantglyn'), John Rogers, D. Ellis (Mowddwy), William William ('Wil y Prydydd'), Evan Jones (Darowen), [David Jones] ('Ieuan Cadfan') [David Richards] ('D[ewi] Silin'), Jeremy Humphrey, Dafydd Davies, John Rees, Morris Jones ('or Talwrnyn agos i Lanfyllin'), Thomas Edward ('Twm o'r Nant') Arthur Jones, John Davies, William Philip, Cadwaladr Moris, John Brwynog, Lewis Owen, John Edward, Dafydd Rees (Llanbryn Mair), Syr Gri[ffudd] Vychan ('o Sir Drefaldwyn'), John Thomas, Henri Humphreys (Bwlch y Ddar), [Hugh Evans] ('Howel Eryri') Dafydd Morris ('Bardd Einion') and others; an anonymous 'English Elegy on the Reverend Mr. Howel Davies Chaplain to the Rt. Hon. Countess of Walsingham'; a letter from David Davies, Tu Uchaf, near Mallwyd, 1810 (the distribution of Welsh Bibles in Llanymawddwy) (together with a list of subscribers and a table of statistics); a table of minted coins ('Darnau o bres bathol'), with dates; a letter from Thomas Philips, Neuadd Llwydiarth to [Mary] Richards, 1863 (enclosing verses on the marriage of Albert Edward, Prince of Wales and Princess Alexandra); a list of the dates of the birth and baptism, 1712-33, of children of Richard Foulkes and Jane Griffith, his wife; a letter from T[homas] Price ('Carnhuanawc'), Crickhowel, 1833 (the preservation of the Welsh language); pedigrees of William Pugh of Mathafarn and of Christopher Bethell, bishop of Bangor; a certificate, 1798, of the payment by the parish of Llan y Mowddwy, Merioneth of a sum of £7-7-3, being a 'Voluntary Contribution for the Defence of the Country'; etc. Printed items pasted inside the covers include a prospectus of Carl Meyer: An Essay on the Celtic Languages and a notice of a proposed public dinner to W. Owen Pughe at Denbigh, 1834. Some of the transcripts are dated within the period 1857-8.

Letters and papers of Rev. John Williams (Ab Ithel) and his family, 1832-1898, comprising page-proofs of parts of Brut y Tywysogion (NLW MS 17163D); drafts and incomplete copies in manuscript of several of Ab Ithel's printed works, including Y Gododdin (NLW MS 17167E), The Traditionary Annals of the Cymry (NLW MS 17168E), Druidism (NLW MS 17169E), Brut y Tywysogion (NLW MS 17164E), and Annales Cambriae (NLW MS 17165E); contributions to the Cambrian Journal (NLW MS 17171E); his address at the Conwy Eisteddfod, 1861 (NLW MS 17187A); papers relating to his collation to the rectory of Llanymawddwy, 1849 (NLW MS 17189E); 'The Church of England independent of the Church of Rome in all ages' (NLW MS 17175B); sermons in English and Welsh (NLW MS 17184C); 'A few plain and practical Observations on Anglican Education' (NLW MS 17185B); the prize essay on the question 'whether the British Druids offered human sacrifices' by 'Hu Gadarn' (NLW MS 17173D); an essay entitled 'Traethawd ar Ddarganfyddiad yr America Gan Madog ab Owain Gwynedd, yn nghylch y ddeuddegfed ganrif' by 'Columbus' (NLW MS 17188C); an essay 'On the state of Agriculture and the progress of Arts & Manufactures in Britain, during the period & under the influence of the Druidical System' by Rev. John Jones, Llanllyfni (see Archaeologia Cambrensis, Supplement 1850) (NLW MS 17176E); 'Y Telynwr Cymreig, sef cyfarwyddiadau i ddysgu'r Delyn' by 'Dafydd Frenin' (NLW MS 17177F); four essays on 'Y manteision a ddeillia i'r Cymry o ddysgu yr iaith Seisnig' by 'Uthr Bendragon', 'Eiddil', 'Gwir Gymro', and 'Y cynyg cynta' 'rioed' (NLW MS 17188C); a 'History of Wales to the death of Llewelyn' (NLW MS 17178E); sections of a work on Christianity in Britain (NLW MS 17179E); letters addressed to Ab Ithel and also to his wife and daughters (NLW MS 17190D); press cuttings and extracts (NLW MS 17181E); sketches and medical and household recipes (NLW MS 17180C), and letters, 1884-1885, relating to the Ab Ithel Memorial Fund.

Cyfrolau yn cynnwys carolau Nadolig yn bennaf a gasglwyd ac a gopïwyd, 1901-1936, gan Hugh Rees (1859-1946), Tanygraian, Llanymawddwy, sir Feirionnydd, hen daid Mrs Mary Williams, y rhoddwraig; nodir ei ffynonellau, cyhoeddiadau eglwysig gan mwyaf megis Y Llan a Y Cyfaill Eglwysig; a phenillion gan Nansi Richards, 'Telynores Maldwyn', a gyhoeddwyd yn nhudalen yr ifanc yn Yr Haul, Tachwedd a Rhagfyr 1936; ynghyd â'i gopi o Rhys Prichard, Canwyll y Cymru (Casnewydd, 1888), wedi'u dethol gan Thomas Levi a dderbyniodd yn rhodd yn 1900 a chyfrolau eraill printiedig; a ffotograff ohono, 1919, gyda dau arall ar ben Bwlch-y-groes, Llanymawddwy, a arferai groesi ar ei ffordd i weithio ar gronfa ddŵr Llanwddyn.

Deeds and documents acquired by Urdd Gobaith Cymru, relating to lands and property in the parishes of Llangower, Llanymawddwy, and Llanycil, Merionethshire, 1679-1900.