Three leaves used as binding material in front of the main three fragments of Peniarth MS 47, containing a fragment of Brut y brenhinedd.
- s. xiv/xv
Welsh prose and verse, notably including prophetic compositions.
- s. xv
Manuscript known best as the Book of Aneirin (Llyfr Aneirin), containing the heroic poem Y Gododdin and a number of gorchanau.
- s. xiii2
Latin text of Welsh law, which was known to lawyers active in Gwynedd during the 13th century. This text or a related one may have provided the basis for the Latin text in London, British Library, MS Cotton Vespasian E xi, which refers to matters relating to both Gwynedd and south-west Wales. It has been suggested that the Llyfr y Tŷ Gwyn text became known in Gwynedd through the agency of Cadwgan, bishop of Bangor (1215-1236) and abbot of Whitland before that.
