The series comprises notes on Celtic languages, including Welsh, Cornish, Gaulish, Breton and Irish.

A volume containing a lecture, 1840, on the Celtic languages by Edward Ward Foster (1762-1865) of Derby, philologist, the second in a series of six lectures by him on 'Language, Rhetoric and Elocution'.

A file containing letters, cards and other papers received by Arthur S. B. Davies from people with an interest in the various Celtic cultures. The papers reflect his interest in various Celtic cultures. Also included are some letters to D. Gareth Davies, A. S. B. Davies's son.

Miscellaneous papers containing notes, lists, transcripts, extracts, etc., in the hand of Edward Williams ('Iolo Morganwg') bound together in one volume. The contents include pp. 13-39, copies of ten tales or fables in Welsh, nine bearing the titles 'Dammeg y Dial', 'Dameg y Ceiliog Rhedyn a'r Moryn', 'Dammeg y Dylluan, y golomen, a'r ystlym', 'Dameg y geifr, y Defaid, a'r bleiddiaid', 'Dameg y march gwyllt', 'Dammeg yr Eos a'r hebog', 'Dammeg Cenfigen yn Llosgi ei hun', 'Dammeg y Gwr a'r [Ebol]', and 'Dammeg Meredydd ap Rhosser o Lanbedr a'r Fro am gastell Tre Warin', and the tenth telling the story of Tanwyn, the son of Trahaearn, the bard (for the Welsh text of nine of these see Iolo Manuscripts . . ., pp. 167-84, and for English translations ibid., pp. 577-96); 38, brief notes with the superscription 'On the affinity of the ancient Gallic or Celtic with the Modern British', being presumably the introduction to a proposed essay or article on the said subject; 43-8, sketches ? in connection with the construction of a 'wheel oared boat'; 49- 64, 66, 68-96, 136-7, genealogical and other data relating to British saints some allegedly extracted from the manuscripts of Tho[mas] Truman, Iaean Deulwyn, Iaean Brechfa, Antoni Pywel, and Watkyn Owen; 65, a collection of miscellaneous Welsh words with English definitions, etc.; 66, ten stanzas of Welsh verse by [Edward Williams] 'Iolo Morganwg' attacking [Owen Jones] 'Owain Myfyr'; 67, a short list of Welsh triads; 97, an extract from the Gent[leman's] Mag[azine], 1780, relating to the cultivation of a new kind of wheat; 98, lists of pre-Saxon archbishops of London and early bishops of Llandaff; 99, notes on English history temp. Richard II - temp. Henry VII; loo, a list of the kings of Wales, A.D. 181- 517; 101, three draft stanzas of religious verse [? by Edward Williams]; 102, an incomplete, ? draft copy of a letter relating to Cattwg Sant and 'proverbs, moral aphorisms, etc., attributed to him'; 110, a Welsh-English list of species of apples; 111, a list with the superscription 'Llyma enwau wyth Esgobion Cymry Cyn dwyn o Saeson goreuon eu gwlad oddiar y Cymry'; 124, a list of 'Churches in Glam[organ which] are not generally called by the names of saints'; 131 + 133, an incomplete list of the names of those who had founded churches in Glamorgan ('Enwau y Rai a wnaethant Eglwysydd a Chorau ym Morganwg') (see Iolo Manuscripts . . ., pp. 219-22, 635-8); 155-74, 183-4, 187, 197, 203, notes relating to the special alphabets which, according to Edward Williams, were in use amongst the Welsh bards and monks, the four-sided billets of wood used as a writing surface when these two alphabets were used, the 'peithynen' (the name given to a series of such billets inserted in an upright frame so as to allow each to be rotated), the mythological account of the origin of letters and the basic alphabet, the acquisition and development of the alphabet by the Cymry, the use of wood as a writing surface in Wales in the Middle Ages, etc.; 166, four stanzas of English verse being doxologies written by Edward Williams in 'long metre', 'common metre', 'short metre', and the 'metre of Psalm 148'; 175-6, a copy (probably not in the hand of Edward Williams) of the assessment for poor rate in [the parish of] Lantwit Major [co. Glamorgan], 1753-1754; 180, 182, 194, 200, 205-08, 211, miscellaneous notes on bardic and literary matters; 181, a transcript of the beginning of a text of 'Brut y Brenhinedd'; 185-6, an incomplete ? copy of a letter from Edward Williams to John Nichols, esq., containing a description of an accompanying example of a 'peithynen' (see above), a note on the word 'peithynen', observations on the connection between Latin and Welsh, brief comments on Edward Llwyd and Doctor [John] Davies [of Mallwyd] and their knowledge of the Welsh language, etc.; 189-92, a list in Welsh of twenty-two of the basic principles or regulations of the bards of the Isle of Britain ('Defodau a Breiniau Beirdd Ynys Prydain') with an English version of the first twelve; 198, five stanzas of a Welsh hymn; 215-116, brief notes relating to the administration of justice in Glamorgan, 12th-16th cent.; 2117, an anecdote relating to Sir Risiart Grinvil [Norman knight, 1st half 12th cent.], the bringing of the builder Lalys ? from Rome to Glamorgan by the said Sir Risiart, and the building of the monastery at Glyn Nedd, the church of Llandaff, and castles at Caerdyf, y Coetty, San Dunwyd, etc., and the founding of Trelalys by the said Lalys; 218, an anecdote relating to [the Norman knight] Syr Rhobert Fitshamon and Ifor Bach, lord of Regoes and Glynrhondda; and miscellaneous notes, etc. The reverse side of printed handbills containing proposals for publishing Edward Williams's two - volume work Poems Lyric and Pastoral and a new edition of Dr. [Samuel] Johnson's Dictionary have been used in two instances for writing notes.

Miscellaneous papers and booklets or note-books containing notes, lists, transcripts, etc., in the hand of Edward Williams ('Iolo Morganwg') bound together in one volume. The contents include, pagination in brackets, a list of one hundred and sixty-one items headed 'Welsh MSS. in the Possession of E[dward] Williams ['Iolo Morganwg']. Transcripts' (1-13); a list of thirty-one items headed 'Hen Ysgriflyfrau' being apparently manuscript volumes in the aforementioned Edward Williams’'s possession (15-16; many of these items can be identified amongst the Llanover manuscripts now being described); a list of titles of ? 'cywyddau' with numbers, poets' names, and page references headed 'MS. at Revd. Mr. Peter Williams', etc. (17-19); a list of the titles and / or first lines of forty-four 'cywyddau' and 'awdlau' under the name H[ywel ap] D[afydd ap] I[euan ap] Rhys and of two 'awdlau' under the name Gwilym Tew with page references, these corresponding to the pagination of transcripts of poems with the same titles or first lines by these poets (excepting one by Bedo Brwynllys to the said Hywel Dafydd) in Cwrt Mawr MS 12 in the National Library of Wales (20-24); a list of the titles of ? 'cywyddau' with the poets' names or initials and page references headed 'D[afydd] Dd[u] Eryn Broad Folio' (25-6); a list of the titles of 'cywyddau' and 'awdlau' headed 'Long vol. folio Piser Hir' with the poets' names or initials and page references the latter corresponding to the pagination of transcripts of poems with the same titles by the said poets in the manuscript known as Y Piser Hir now NLW Deposited MS 55 (27-30); a brief note referring to 'A Book with D.T. containing a large collection of Gronwy Owain's Letters . . .', etc. (31); extracts from poems attributed to R[hys] G[och] Eryri, Gruff. ap Daf. ap Einion Lygliw, L[ewis] G[lyn] Cothi, Iolo Goch, and B[edo] Brwynllys, (41-4); (41-4); a sequence of entries consisting of titles of Welsh poems, mainly 'cywyddau', with or without the name of the poet, first lines of, or extracts from, such poems, attributions only of poems, brief data re a poem or a poet, brief comments relating to a poem such as 'good, to be copied', 'to be copied, important', often without the name of the poem or poet, etc., these entries being accompanied by page references and these obviously referring to the pagination of the Welsh Charity School MS which is now British Museum Add. MS 14866 (44-58); further extracts from, or references to, items in ? the Welsh Charity School MSS now in the British Museum including transcripts of 'englynion' attributed to Wm. Cynwal, D. ab Edmund, and Tywysog Llywelyn ap Gruffudd (58-60, 69); a brief note relating to court officials in [medieval] Gwynedd, Pywys, and Deheubarth (71); an incomplete note re a linear measure called 'Mesur Llath Fleddyn' (72); a survey of Welsh bardism from the time of the Emperor Arthur to the seventeenth century attributed to Edward Dafydd referring to, inter alia, the measures taken by the Emperor Arthur to restore the bardic system, the 'eisteddfodau' of Gruffudd ab Cynan, the 'eisteddfod' at Caerfyrddin in 1452 and the twenty- four strict-metre system adopted there, 'eisteddfodau' held at Yr Adur and Aberpergwm in the time of Iorwerth Fynglwyd and at Abertawy in the time of Lewys Morganwg, a volume on the allegedly truly traditional poetic metres compiled by Lewys Morganwg and volumes by Meuryg Dafydd and Dafydd Benwyn on the same theme, an 'eisteddfod' at 'Castell Caer Dydd' convened by Sir William Herbert where Llywelyn Siôn was chief adjudicator, the condemning of the Carmarthen system of strict metres and the authorising of an alternate, truer system [the Glamorgan system] at this 'eisteddfod', a volume by Llywelyn Siôn containing an account of this system, and the writer [i.e. Edward Dafydd]'s intention of publishing this account and other bardic material in a printed volume (73-82; see the foreword in Cyfrinach Beirdd Ynys Prydain attributed to the said Edward Dafydd, and for a comment on the whole matter see TLLM, t. 91); (continued)

Notes on Welsh poetic metres headed 'Llyma son am y mesurau Cerdd Dafawd ag fal au gwellhawyd o amser i amser ag o beth i beth ag o farn i farn' (82-8); an incomplete ? draft of an undated letter from . . . to . . . containing observations on a book (? in two parts or volumes entitled 'Oes Ymbwyll' and 'Oes y Pwyll') by recipient concerning revealed religion (89-104); a list of words, phrases, etc., headed 'Allusions to Coelbren y Beirdd in D.G. and to other arts and sciences' with page references to the said allusions [these, by inference, being extracted from the collection of Dafydd ap Gwilym's poems published by Owen Jones and William Owen in 1789 under the title Barddoniaeth Dafydd ab Gwilym] (105-07); miscellaneous notes relating to bardic matters such as the nature or attributes of 'cerdd gadair', 'cerdd arwest', 'cerdd dant', 'arwyddfardd', and 'cerdd deuluaidd' (113-25); notes relating to the contribution of Talhaiarn Fardd, Ystudfach Fardd, Ceraint Fardd Glas, Taliesin Ben Beirdd, Rhys Goch ap Rhiccart, Casnodyn Fardd, Dafydd ap Gwilym, Ieuan fawr ap y diwlith, and Llesoed Fardd to the Welsh metric system (126-17); copies of memorial inscriptions including seventeenth century inscriptions relating to members of the Powell family in the churchyard at Llangynwyd [co. Glamorgan] (128); brief notes referring to the expressions 'Hu ynys' and 'Gwyr Hu', and to Hu Gadarn and early mythological bards of Britain (133); notes relating to 'cynghanedd unodl', 'cynghanedd gytsain', and 'corfannau' (138-9); transcripts of 'englynion' attributed to Rhisiart Iorwerth, Rhys Meigen, and Wm. Llyn (140 ); a brief note relating to a poetic metre known as 'toddaid Taliesin' with transcripts of two Latin stanzas in 'englyn' form attributed to D.N. and ? Samuel Jones 'o Fryn Llywarch' (141-2); notes relating to the decline of knowledge concerning the old Welsh bardic order in Gwynedd in the late middle ages, literary patronage in Morgannwg during the post Norman conquest period, poetic composition ? in relation to the 'pedair ansawdd ar hugain Cadair Morganwg', and 'Y Bardd Glas Ceraint' (143-7); an extract from a 'cywydd' attributed to Rhys Goch Eryri, a note on the words 'clws' and 'tlws' and the use of the first for the second with a transcript of an 'englyn' attributed to Hugh Jones 'o Langwm' to illustrate this usage, and three Welsh triads (148-51); lists or groups of Welsh words sometimes with English definitions and / or illustrative excerpts from Welsh verse (152-3, 155, 164, 172-3, 200, 203, 210, 335, 337, 341, 343-6, 348, 350, 353-4 356, 360); a number of 'Quotations in exemplifications of the sense or meaning of [specific Welsh] words' (165, 168-9); a list of eleven questions, ?forming a questionnaire, relating to the Welsh language, its major dialects, local words and idioms, the possible possession of ? old Welsh manuscripts ('hen ysgrifeniadau') by the person questioned or acquaintances, etc. (174-5); brief notes relating to Siôn Rhydderch and Lewis Morris (179); transcripts of stanzas of Welsh verse attributed to Gwalchmai and Elidir Sais (189-92); notes headed 'Silurian Contractions' (197); a group of Welsh words illustrating the use of de- in Sil[urian] where dy- would be used in N[orth] W[ales] as the first syllable (198); a note on the two sounds of the symbol Y in the Welsh alphabet (199); a list of kings of the British, 481-683, and of Plantagenet and Yorkist kings of England, 1307-1483 (201); notes deriving the Latin word bellum from a Celtic word bel signifying war and referring to the cognate element -fel in Welsh words (204 + 209); a list of the kings of England, 1272-1558 (212 ); an incomplete author index to Sion Rhydderch's edition of [Thomas Jones :] Llyfr Carolau [a Dyriau Duwiol], 1745 (249); brief notes, sometimes merely dates, relating to Rowland Vaughan 'o Gaer Gai', Richard Huws, Wmffre Dafydd ab Ifan, Syr Lewys ab Hugh 'o Fochnant', Edmund Prys, Huw Morys, and Rhys Pritchard (250-5I); an extract from the Gentleman's Magazine, 1809, relating to the Mears family (253-4); (continued)

Comments reflecting the writer's attitude towards the ? introduction of an artificial regularity into the Welsh language (257-9); a very brief note on Ty Newydd, Y Fotffordd [Watford, co. Glamorgan], [Nonconformist] meeting house, and an anecdote relating to Sir Wm. Lewys of Gilfach fargod and ? a conventicle being held in the parish of Gelli Gaer [co. Glamorgan], temp. Charles II or James II (274); dates of the deaths of David Jenkins of Hensol [co. Glamorgan], judge, and his son and grandson (278); miscellaneous extracts from, or references to, various printed works (279- 81); data relating to the Kemis family of Cefn Mabli, Llanblethian, and Newport [cos. Glamorgan and Monmouth] (291, 293-4, 298); notes headed 'Peculiarities of the Dimetian Dialect' (301-03); a brief note relating to incursions into the Isle of Man and Anglesey, A.D. 431, transcripts of stanzas of Welsh verse attributed to R[hys] Goch ab Rhiccert and Taliesin, copies of two versions of an 'englyn' by [Edward Williams] 'Iolo Morganwg', two Welsh triads, a list of six 'Books at Wm. Morris, 1783', a list of four 'Reasons for supposing that the South Wales Poets imitated the Troubadours', etc. (317-21); a list of twenty-four topics or subject or chapter headings with the superscription 'Hints for a Tour in Wales' (322 + 327); data relating to Thomas ap Evan ap Rhys, 16th cent. poet (324-5, 323 ); a transcript of six stanzas of Welsh religious verse (328); a list of Welsh proverbial expressions, etc. (331, 358); a list of Welsh expressions incorporating the name of God headed 'Traces of Ancient Welsh Piety' (333); and a four-line stanza of Welsh verse by [Edward Williams] 'Iolo Morganwg' (359). Pp. 213-48, which formerly formed a separate booklet, contain miscellaneous notes, extracts, memoranda, etc., including extracts from Welsh poems attributed to Robin Ddu, Cynddelw, Pryd[ydd] y Moch, Hywel ap Iolyn, W[illia]m Cynwal, Ed[mwnd] Prys, Daf. Goch, Inco Brydydd, Rhys Nanmor, Math. ap Lln. Goch, Ieuan Du'r Bilwg, Gruff. ab Mared., Siôn Ceri, L[ewis] G[lyn] Cothi, Lln. Fardd, Iolo Goch, Gruff. Grug, and R[hys] G[och] Eryri; comments on the need for a better grammar of the Welsh language which, inter alia, would pay attention to 'dialectical peculiarities'; a list of seven topics or subject or chapter headings for 'Historical Dissertations on the Ancient British Bards and Druids, etc.'; chronological computations concerning the possibility of a certain Dafydd Jones, a native of Cardigan, having seen, circa 1530 or 1540, an elderly woman who remembered another elderly woman who had seen D[afydd] ab Gwilym; groups of, or notes on, Welsh words; etc. Notes in two instances have been written on the verso and margins of a printed circular announcing the printing of Edward Williams's two volumes of English poems entitled Poems Lyric and Pastoral (202 + 211) and of a printed copy of the resolutions of a meeting of gentlemen and woolgrowers of the county of Glamorgan held at Cowbridge, 16 April 1806, when it was resolved to establish a wool fair for the said county to be held at Cowbridge in July (unnumbered pages between p. 317 and p. 318 and p.319 and p. 320).

Literary, research and personal papers of Louis P. Nemo (Roparz Hemon, 1900-1978), comprising personal and general correspondence, 1941, 1947-1978; manuscript and typescript drafts of novels and novellas, short stories, poetry and plays; drafts of articles by Roparz Hemon and collected by him as editor of Ar Bed Keltiek; research papers, including notes and transcripts of Breton literary texts; miscellaneous fragments of manuscript and typescript draft translations into English; personal papers, including papers collected by Roparz Hemon or submitted to him by other authors and scholars; notebooks relating to the Breton language, drafts of Breton dictionaries including Geriadur Istorel ar Brezhoneg, and drafts of articles on the Breton language; notes on other Celtic languages, including Irish, Welsh and Manx, and notes on Esperanto; papers relating to organisations of Breton or Celtic interest including Skourr Breizh ar C'hendalc'h Keltiek, the Breton Branch of the Celtic Congress; papers of other Bretons, including Francois Vallée (1860-1949) and Dr Louis Dujardin (1885-1969); and miscellaneous notes and papers, [1940s]-[1950s], chiefly relating to Breton and Irish, mainly in the hand of Anton Ar Roue, cook and gardener to Roparz Hemon.

A translation by Stephens of a treatise on the position occupied by Welsh among languages of Celtic origin.

Mae'r gyfres yn cynnwys papurau ymchwil yr Athro J. E. Caerwyn Williams, [1930 x 1999], yn ymwneud ag iaith a llenyddiaeth Iwerddon a'r gwledydd Celtaidd eraill, ac eithrio Cymru. Crewyd a chasglwyd nifer o'r papurau wrth baratoi ar gyfer cyhoeddi.