A cycle of three interludes on the history of the world, and miscellaneous poems, mainly englynion and poetry in carol metres, autograph, 1739-1758, by Thomas Williams, 'Merchant Taylor' (ca. 1690-1763), Tal-y-bont, Llandygai, Caernarfonshire, all of which appear in his published work Mynegiad yr hen oesoedd ... (London, 1761). Folios i (the original front cover), 1-6, 136-41 are palimpsests. The underwriting, partly legible under ultra-violet light, is from fifteenth and sixteenth century court records relating to Caernarfonshire, consisting mainly of lists of names.

Typescript copies [by W. Gilbert Williams, Rhostryfan, co. Caernarvon] of a report of a test case, 1901, at Carnarvon Petty Sessions against Owen Jones, Rhostryfan, alleging the cruelty of the custom of tread-mill churning by dogs; of a letter from Wm. Williams, Bodadan, to G. Roberts, 1824 (the marriage settlement of the writer's daughter); and of extracts from Caernarvonshire Quarter Sessions records, including a declaration by Thomas Roberts of the proposed use of a printing press in the town of Carnarvon, 1799, a petition by poor cottagers who dwell on the mountains of Llanllyfni and several other parishes for the retention of their cots and enclosed land (permitted as a prevention of their emigration to America), 1812, and an inquest on the body of David Thomas, Llanrug, 1822.

A collection of transcripts, mainly by Robert Vaughan, Hengwrt, of records relating to North Wales, including the extent of North Wales by John de Delves, 26 Edward III; a record of a view of frankpledge for the commote of Menai, 28 Henry VIII; ministers' accounts for Flintshire, 30-31 Henry VIII; extracts from miscellaneous inquisitions, rentals, court rolls, and correspondence; receipts of Lewis Owen, deputy receiver of North Wales, 1 & 2 Philip and Mary; notes of leases under the exchequer seal, 1579; notes on the form of administration of justice in Wales by Auditor Hill; 'The State of the Dominion of Wales' by Sir Thomas Canon; accounts of John Lloyd of Ragad, escheator of Merioneth; instructions to the Earl of Bridgewater, President of the Council in Wales and the Marches, 1633; a roll of the coroner for Merioneth, 10-11 Edward III; estreats of fines in North Wales, 22-30 Edward III; lists of persons indicted in Merioneth, 6- 19 Richard II; records of pleas before the justice of North Wales, 4 Edward II; a list of recognisances in the exchequer at Caernarvon, 18 Edward II; lists of persons in Anglesey fined for being in arms with Owen Glyndyfrdwy, with lists of outlaws and jurors; and a breviate of an account between Sir John Salesbury, chamberlain of North Wales, and Lewis Owen, his deputy, 1555.

Transcripts of Court of Star Chamber Proceedings, Nos. Elizabeth G. 13/21, J. 22/2, S. 29/36. W. 20/25, and James I 210/24, 223/17, and 311/33 (see Ifan ab Owen Edwards: A Catalogue of Star Chamber Proceedings relating to Wales (1929), pp. 31-2, 36-7, 185, 171). The documents relate to actions of Caernarvonshire, Merioneth, and Denbighshire interest.