NLW MS 20143A [SEP] language of work or name
NLW MS 20143A
NLW MS 20143A is a Welsh-language manuscript of the laws of Hywel Dda dating from the middle of the 14th century. It is one of the few surviving Welsh manuscripts of the period to have a medieval binding, and has been digitised by the National Library of Wales, which acquired the manuscript in 1969. 
Contents.
The manuscript contains a copy of some of the law that applied in medieval Wales, known as "Cyfraith Hywel" (the law of Hywel, after the Welsh king
historian of Pembrokeshire, include a collection of the latter's work. Henry Owen acquired two original manuscripts, "Pembrock and Kemes" (NLW MS 1385) and "Fragmentes of Wales ..." (NLW MS 1388), by George Owen and there are also a number of transcripts of other his works that were made in the eighteenth and nineteenth centuries.
Crosswood Manuscripts (NLW MSS 1641-1952).
The Crosswood manuscripts, named for their former home in Montgomeryshire, consist of the manuscripts of Gwallter Mechain (