A second volume of transcripts of the laws of Hywel Dda made for William Maurice, and partly by him. This volume begins with Trioedd Cyfraith; excerpts from Lib. Frag. i.e. from Peniarth MS 36; Llyfr B. or Lib. Beta, which appears to be based largely upon Peniarth MS 33; and the following transcripts of texts under the names given to them by William Maurice. The names have also been written on the original manuscripts by William Maurice.
Llyfr As, which is now Peniarth MS 175. Lap which is now Peniarth MS 256. Morgeneu which is now Peniarth MS 37. Cyn., which is now Peniarth MS 35. Teg., which is now Peniarth MS 32. Pomf. which is now Peniarth MS 259b. Lew. which is now Peniarth MS 39. Befol which is now Peniarth MS 259a. With an incomplete transcript of Peniarth MS 28 and a few pleadings from other sources.
These manuscripts of the laws of Hywel Dda are mentioned in the catalogue of Welsh Manuscripts at Wynnstay (See Wynnstay MS 21. Also Transactions of the Cymmrodorion, vol. 2 (1828), no. 3, which appears to refer to the first volume).
These two volumes (MSS 37-38), together with MS 36, and the other manuscripts in this schedule which are known to have been in the possession of William Maurice of Cefnybraich, were undoubtedly out of the Wynnstay Library when the disastrous fire of 6 March 1858 destroyed its contents. Aneurin Owen returned two parcels of manuscripts in 1851, according to a copy of a receipt placed in the above MS. There is a rough list of the manuscripts with the receipt, and three items are marked as borrowed by Mr Petrie, late keeper of the records in the Tower. The manuscripts covered by this receipt can safely be identified with MSS 11, 12, 35, 36, 37, 38, in this schedule, and there remains one entry of a volume of the Law of Hywel the Good, which may be in error for No. 10, which is otherwise not represented in the list. It is significant that these seven manuscripts were kept together in Box 47 in the muniment room at Wynnstay, and the conclusion is that they were not returned to their place in the library. Aneurin Owen was associated with Petrie in the latter's project for the publication of a corpus of materials for the early history of Britain, a task which was partly accomplished by the publication of the first volume of the 'Monumenta Historica Britannica' under the direction of Sir T. Duffus Hardy in 1848. Aneurin Owen's 'Ancient Laws & Institutes of Wales', published in 1841, was but a part of this larger scheme.