Transcripts of Welsh cywyddau, incorporating 'Llyfr Mr Robert Wynne o'r Berth Ddu' (p. 19). The manuscript includes blocks of poetry ascribed to Dafydd ap Gwilym (pp. 387-405) and Guto'r Glyn (pp. 652-670), and associated with Wiliam Gruffudd of Penrhyn (pp. 493-589).
A collection of awdlau and cywyddau, including a substantial section of poems ascribed to Guto'r Glyn (pp. 151-300) and Dafydd ap Gwilym (pp. 355-379). The manuscript also includes a copy of Chaucer's Treatise on the Astrolabe (pp. 87-100). Gwenogryn Evans states that pp. 1-22, 335-406 and 410-33 are written in an archaic style in the early part of the seventeenth century, while pp. 23-85, 101-33 and 151-303 belong to the last quarter of the sixteenth century. Other parts of the manuscript are later additions, except the vellum leaf (pp. 305-6).