This manuscript consists of memoirs by Sir John Wynn of Gwydir. No description is given in the text, but it corresponds with the Memoirs printed by Angharad Llwyd in her edition of the History of the Gwydir Family, and reprinted in the 1878 edition, pp. 90-105. The printed text, however, ends at the middle of p. 24 of this MS. Also included is a history of the Gwydir Family by Sir John Wynn: this corresponds to pp. 12-84 of the last printed edition (1878). That manuscript also contains a copy of the Survey of Penmaenmawr, said to have been made by Sir John Wynn of Gwydir, printed from a copy belonging to Mr. Thomas Wright, F.S.A. by J. O. Halliwell in 1859 and reprinted by Mr. W. Bezant Lowe at Llanfairfechan in 1906. Pages 149-152 list farms and names of occupiers, with returns as to the number of lambs, the amount of lactuals, money received for the lambs, and payments. The date is 1736. The farms are situate on the Denbighshire side of the Conway in the parishes of Eglwysbach, Llanddoged, &c.