A photostat facsimile of Balliol MS 353, a commonplace book of Sir John Price (1502?-1555). The manuscript contains genealogical memoranda relating to the family of John Price (Siôn ap Rhys) and his wife, Johan Williamson, notes on Welsh bardic grammar, proverbs, triads, and miscellaneous memoranda; transcripts of Welsh poetry including eulogies of the compiler and of his ancestors. The poets represented include Bedo Brwynllys, Dafydd ab Edmwnd, Dafydd ap Gwilym, Dafydd Llwyd ab Einion Llygliw, Dafydd Llwyd ap Llywelyn ap Gruffudd [Dafydd Llwyd Mathafarn], Dafydd Nanmor, Gruffudd ap Maredudd, Gruffudd Gryg, Gruffudd Hiraethog, Gwilym ab Ieuan Hen, Huw Pennal, Hywel Dafydd ab Ieuan ap Rhys, Mr Harri (Cydweli) [Harri ap Hywel ('Mastr Harri')], Hywel Llwyd ap y Gof, Hywel Swrdwal, Ieuan Deulwyn, Ieuan ap Rhydderch ab Ieuan Llwyd, Ieuan ap Tudur Penllyn, Ieuan Du'r Bilwg, Ieuan Gethin ab Ieuan ap Lleision, Ieuan Tew, Iolo Goch, Lewis ap Richard alias Morgannwg, Llywelyn ap Maredudd ab Ednyfed, Llywelyn ap Owain, Madog Benfras, Rhys Nanmor, Siôn Cent, Siôn Mawddwy, Thomas Vychan [Vaughan], Taliesin ('yr awdl fraith'), and Tudur Aled. The principal items of Welsh prose are anecdotes relating to Coch y Powtsh, Christopher Mathew of Glamorgan, and Tudur Aled, under the title 'Geiriau digri yr hwnn ny ellir y hadrodd mewn Iayth arall'; a text entitled 'Kyngor y wr ddwyn y vuchedd yn galh ac yn gymedrol'; and a bardic grammar.

A manuscript containing transcripts by David Parry from the Red Book of Hergest, together with other poetry, the volume being compiled before it was given to Jesus College, Oxford in 1701. The contents of the volume are as follows: A Welsh Grammar copied from the Red Book of Hergest (col. 1117), with collations by Samuel Williams from Llanstephan MS 3, p. 472 (original foliation I-Vb, 1-7); a copy of the poetry on cols 1143-1356 of the Red Book of Hergest (original foliation 7-12b, original pagination 13-168, 169-265); followed by sixteen leaves at the end of the manuscript containing poems by Robin Ddu o Fôn, Tudur Aled, Rhys Nanmor and others, together with the pedigree of Sir Rhys ap Thomas.
Samuel Williams has copied a good many of the older material in a modernised orthography on the side left blank by the original copyist. There are also marginalia in the hand of Moses Williams. A note, probably in the hand of Samuel Williams, on p. 265 (original pagination) reads 'All the Poetry collated March 27 . 1722'.