A miscellaneous collection of records mainly relating to Wales compiled towards the middle of the seventeenth century. -- The manuscript begins on page 53 with extracts from 'Llyfr Coch Asaph', with the additions from the hand of William Bullocke, as in Peniarth MS 231 - a manuscript written by Robert Vaughan, Hengwrt, and most probably the immediate source of the Nefydd version; the 'summa' of 'Llyfr Coch Asaph' compiled in 1602, which is also contained in Peniarth MS 231, as well as the list of contents of another St. Asaph record - the 'liber pergamenus' which is now deposited with the Church in Wales records at the National Library; a transcript of a record of proceedings on a writ of quare impedit brought by the Prince of Wales against Howel Gymen and a hundred and seventeen others, touching the advowson of a prebend in the collegiate church of Holyhead ('prebenda de Castro Keby') supplied by 'Mr. Ellice the Councellor'; a collection of historical records relating to Wales taken directly from the hand of Robert Vaughan in Peniarth MS 236; a transcript of the 'Historia Britonum' of Nennius, copied out of a book given to John Selden by William Camden, compared with a version in 'Oxford Library' under the name of 'Gilda Minor', and ending with an extract from a Cottonian manuscript (pp. 245-88); a copy of the statutes of Chester Cathedral, temp. Henry VIII (pp. 289-310); 'Ymrafaelion henwau Ynys Brydain', etc. - seventeen chapters of pseudo-history and description of the Isle of Britain (cf. slightly different versions in Peniarth MSS 163 and 215), with a supplement containing accounts of place-names not included in the main text, a reference to the earthquake of 1574/5, the wonders of Scotland and Ireland, the conversion of the various British nations to Christianity, and 'y naw helwriaeth', 'mesurau cerdd dant', and 'trioedd mab y krinwas' (pp. 312-49). -- At the end of the volume are a number of documents relating to Cheshire and Flintshire - a note of entail of Flintshire lordships, Flintshire rents of assize, the customs of Dee mills and other records taken from a book of Edward Whitby, recorder of Chester, and a transcript of Robert Vaughan's copy of the fealty roll of the Prince of Wales, 29 Edward I .