The set of historical texts: Ystoria Dared (ff. 1-17, cols 1-66); Brut y Brenhinedd (ff. 17 verso-89, cols 67-441) and Brut y Tywysogion (ff. 89 verso-143, cols 443-665); followed by Brut y Saeson (ff. 143-145 verso, cols 665-76), breaking off abruptly in the year 979. All are very close to the corresponding texts in the Red Book of Hergest [see Brut y Tywysogyon: Red Book of Hergest Version, ed. and trans. Thomas Jones (Cardiff, 1955), pp. xxviii-xxix, and Studia Celtica, 12/13 (1977/78), 176]. All are written in two columns by the Red Book scribe, X91, with 2- and 3-line initials in red. Lacunae due to the loss of leaves 1 and 10 in quire 5, the whole of original quire 9, leaves 5 and 6 of quire 17, and the final quire. On the erratic foliation, see below; J. Gwenogvryn Evans numbered the columns allowing, however, in his numeration for the columns that would have been in lacunae. The text of the original f. 1 made good by a hand of [16-17 cent.] on a supplied leaf (f. 1). Headings in textura by a hand of [15 cent.] (e.g. ff. 59 verso, 87); annotation and textual correction by several hands of [15 cent.] and [16 cent.] (e.g. ff. 41 recto-verso and 93, ff. 79 and 82, ff. 94 verso and 114 verso, f. 56, f. 123 verso, ff. 127 verso and 135 verso). Rebound in [16-17 cent.]; at this rebinding quires were signed I-XVII, skipping a number somewhere between VII and XI (= quire 10).