CCCC MS 454 is an important copy of the so-called 'E' redaction of the Latin texts of the medieval Welsh laws. Dating from the first half of the fifteenth century, the manuscript was likely compiled in North Wales, possibly within the lordship of Denbigh, and is written in an ornate Gothic hand. The flyleaves contain various additions and notes in Latin and Welsh, including records of cases of robbery and trespass, comments on the circumstances in which a marriage could be dissolved, and notes on historical events. The manuscript also has three paper leaves which contain a printed copy of Ban wedy i dynny (1550), an important early Protestant pamphlet, in Welsh and English, on married priests.
