A mid 15th century manuscript in English prose entitled Here begynneth a booke which is called Brute, the Cronycles of Englonde. There is an introductory paragraph (as in Harley MSS 1337, 2182 and 6251 and Stowe MS 71) beginning 'This booke treteth and telleth of the kynges and principal lordes that euer were in this londe ...' followed by a long rubric (as in Harleian MS 2182), mainly defaced, beginning 'The prolog of this booke declareth hou this [londe] was callyd Albyon ...'. The text begins on p. 2 and, like the majority of the manuscripts of the English Brute (see F. W. D. Brie, Geschichte und Quellen der mittelenglischen Prosachronik The Brute of England, 1905, p. 62), this manuscript ends with the capture of Rouen by Henry V in 1419. Illuminated initial and border on p. 1; chapter-initials in blue, with red flourishes; headings in red.

Two tracts - (a) a description of England, in fifteen chapters, compiled in 1445, beginning 'tractatus iste compendiose extractus de diversorum historiographorum diversis ... describit Angliam ... '; (b) a genealogical chronicle in the same hand projected from Adam to Brutus and from Brutus to Henry VI, but in execution brought only to Edward I, with a continuation in a sixteenth century hand to Henry VIII (1518). The pattern of this genealogical chronicle is that of the Promptuarium Bibliae attributed to Petrus Pictaviensis. The text begins 'Adam in agro damasceno ...' (cf. Thomas Jones, Y Bibyl Ynghymraeg (Cardiff, 1940), p. xiii) and has lines added for the Saxons, kings of Britain, princes of Wales, the different divisions of Saxon England, kings of England, princes of Demetia, princes of Venedotia, &c.

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.