A composite volume, in the hand of Evan Evans, containing notes on Nennius and Gildas, which include twelve triads in Welsh, copies of letters to Archbishop Ussher from Robert Vaughan, Edward Brownker and Gerard Langbaine, together with extracts from a letter from Archbishop Ussher to William Camden (ff. 1-89); pedigrees of rulers and saints (ff. 92-121, 124-132), with copious notes regarding the sources of the texts; poetry by Guto'r Glyn (f. 122); a copy of a charter of Rhos Fynach, Conwy (ff. 145- 147); etc.