A manuscript containing the Bruts (pp. 67-203, 213-292); genealogical tables (pp. 6-66); pedigrees (pp. 293-350); &c. The text is bi-columnar in several styles of writing and in different shades of ink but by one hand, probably that of Owain Gwynedd, except for pp. 138-139, which are in a later hand, possibly that of Robert Vaughan, Hengwrt. Place names written in the margins at pp. 333-336, 340, 342-343 may be in the hand of Robert Vaughan, Hengwrt. The volume has a label on the front cover in the same hand as most of the Peniarth Manuscripts and is numbered '3'.
Cf. Aneurin Owen's Catalogue of the Dwning MSS No. 3. This manuscript is described in the Bruts (Oxford, 1890) as 'Mr. Egerton Phillimore's Folio MS'. The text beginning at p. 67 agrees with that of Peniarth MS 212 (= Hengwrt MS 319). For the text beginning at p. 213 see Bruts, p. 349.

A chronicle of British history to the death of Henry V. (Imperfect).

A chronicle of British history from 'Cassibilan' to Edward III.
The beginning and end of the text is lost.

An incomplete text of the 'Brute Chronicle' from Brutus to the reign of Henry V.
The first eight folios, containing the 'prologue of Albion' and the beginning of the story of Brutus, are in an earlier hand than the remainder of the manuscript.

A manuscript in two hands containing mainly poetry of Taliesin, Iolo Goch, Dafydd ab Edmwnd and others; also pedigrees of British rulers (pp. 6, 14-27, 29), which include englynion chronicling the history of British rulers from Brutus (pp. 16-22).

A manuscript containing Brut y Tywysogion; measurements of Britain; the Twenty-four Knights of King Arthur's court; the pedigrees of British kings and rulers; etc.

Rough notes by Robert Vaughan, Hengwrt, on early British history; a list of Cumbrian Kings; British and Saxon chronology; the rivers of Britain; a list of Gwentian kings; notes on Welsh saints and kings; genealogies; a writ issued by Robert Vaughan, 7 May 1658, for the binding over of Richard Griffith ap Rees and Owen Morris of Llanddwywe, yeomen, to keep the peace towards Margret Evan of Llanddwywe. Many of the notes are written on mutilated letters addressed to Robert Vaughan. On the original covers, bound in at the end of the volume, is the incomplete text of a grant of an annuity issuing out of Y Towr Maen in Trawsvynyth from Richard Nanney of Llanylltyd to Cadwaladr ap Humfrey (ff. 95-96).

A minute book of the Cymmrodorion Society in Powys (established 6 October 1819), 1819-1820, together with a list of members, 1819-1822. The volume was subsequently used by Mary Richards, Darowen, and, to a lesser extent, by Thomas R. Williams, Bryn Tanad, Llanerfyl, to record transcripts of a list of British kings to George III ('Tabl o holl Frenhinodd Prydain or dechreiad Cyntaf hyd ein Brenin George y IIII) from the Almanac of Thomas Jones, Shrewsbury, 1709; poetry in strict and free metres by E[dward] J[ones] (Periglor Caer Einion) (1875), [Hugh Parry] (Cefni) (Utica, N.Y.) (1872), [Morris Jones] (Meurig Idris), John Blackwell [Alun], [Robert Parry] (Robin Ddu [Eryri]), John Edwar[d] Davies (New York, a native of Llan Erful), etc.; englynion submitted for competition at the Cymmrodorion Society in Powys eisteddfod at Wrexham, 1820, by W. Williams (Llandofry), Peter Jones (Liverpool), etc.; 'At y Cymry', being an appeal to Welshmen to protest against the oppression of Protestants in Ireland (printed [?or written] by James Davies, printer, Holywell), letters from Hugh Jones (Erfyl), Caer Lleon to D[avid] Richard[s], [Llansilin], 1820 (the appointment of addressee as secretary of the Cymmrodorion Society in Powys, submission of compositions to the forthcoming eisteddfod), J. Blackwell, Wyddgrug to D[avid] Richard[s], Llansilin, undated [1820] (enclosing poetry), T[homas] Price (Carnhuanawc), Crickhowel to Tho[ma]s Richards, Llangynyw, 1833 (measures for the preservation of the Welsh language) (fragments of the original letter in Cwrtmawr MS 1045), and Geor[ge] Morris, Wrexham to D[avid] Richards, Llansilin, 1822 (payment for windows broken during the eisteddfod); lists of poets, harpists and singers, with particulars of distances of their respective homes [from Wrexham]; a list of Caernarvonshire poets ('Cofrestr o Fardd Caer Arfon'); a list of licences awarded to ovates, etc., at the Gorsedd of Bards at Llangynyw, 1845; a prospectus of Y Dywysogaeth, 1870; 'The Araingment of the Queen of Scotts in Hoderingham Castell in the County of Northamton the VIII of February 1586' (cf. Cwrtmawr MS870); etc. Mounted on the inside lower cover are undated accounts of the Cymmrodorion Society in Powys.

A volume containing texts of (a) the fuller version of 'Ystoria Dared' (pp. 1-40), translated by Peter Roberts in The chronicle of the Kings of Britain, 1811, (b) the so-called 'Brut Tysilio' or 'compiled version' of Geoffrey of Monmouth's 'Historia Regum Britanniae' (pp. 41-198), also partly translated by Peter Roberts (op. cit.), and closely allied to the text of British Museum MS Cotton Cleopatra B.v., and (c) 'Brut y Saeson' to the year 1461 (pp. 199-308). Pp. 1-88 are in a late 14th century hand; the remaining pages are in the hand of Gutun Owain, the 15th century bard and herald associated with the abbey of Basingwerk. A note, dated 1630, by Robert Vaughan, Hengwrt refers to the misplacement of many pedigrees, and another note, dated 1809, by Peter Roberts refers to the identification of the volume by William Maurice, Cefn-y-braich.

A manuscript written in two hands containing Historia Brittonum, et Cronice de Gestis ac Nominibus Regum Anglie. Beginning at p. 132 is a brief continuation of the Chronicles down to Henry VI in a later hand.

A manuscript containing compiled late editions of Dares Phrygius (pp. 1-44); and Brut y Brenhinedd (pp. 45-168).

A manuscript containing dated extracts from Brut y Tywysogion (pp. 1-16); and a chronological table 'out of Sir Tho. S. Sebright's MS. No 13. Ex libro D'ni Jo. Prise Militis'.

The first of two volumes (see also NLW MS 1975B) containing an account, in the autograph of Evan Evans (Ieuan Fardd), of volumes I-VII of the Sebright Manuscripts ('being Edward Lhuyd's MSS' (p. 17)), with some extracts (pp. 17-79); and the beginning of a transcript of Brut y Tywysogion from the Red Book of Hergest (pp. 81-278); etc.

The second of two volumes (see also NLW MS 1976B) containing the concluding part of a transcript of Brut y Tywysogion from the Red Book of Hergest, in the autograph of Evan Evans (Ieuan Fardd) (pp. 279-383).
A note by Ieuan (p. 383) states that he transcribed the text of the Brut in 1784 from a copy made by 'R. Davies' in 1781 (see p. 382). The text of the Brut appears to be a faithful transcript of a Llannerch manuscript.

A manuscript, beautifully written in part, containing an abridged copy of Brut y Tywysogion to the year 1101 (pp. 1-36), with marginal commentary in English and a brief account of Hywel Dda's Laws interpolated in the text after the year 913; an account of King Arthur's knights, especially Owain ab Eirien [Urien] (pp. 37-62); and an account of the life of Sylvester, who was pope in the time of the Emperor Constantine (pp. 63-69).

A manuscript containing Brut y Tywysogion, with which some such text as that of the Saxon Chronicle has, to some extent, been interwoven in the earlier part.

A manuscript containing Brut y Tywysogion copied by Moses Williams from the Red Book of Hergest, cols 231-376.

A manuscript containing Brut y Tywysogion interspersed with the remarks and comments of Dr Powel's edition of H. Lloyd [Humphrey Llwyd]: Historie of Cambria now called Wales (1584) (although certain references in the margins to the pages of Dr Powel's edition do not tally with the 1584 edition). The compiler has also added comments of their own in English, and continued the history down to 1544.

A manuscript containing a copy of Brut y Brenhinedd from the British Museum MS Bibl. Cotton. Cleopatra B. v.

A manuscript containing Brut y Brenhinedd.