The Hengwrt Chaucer manuscript is an early-15th-century manuscript of the Canterbury Tales, held in the National Library of Wales, in Aberystwyth. It is an important source for Chaucer's text, and was possibly written by someone with access to an original authorial holograph, now lost. The Hengwrt Chaucer is part of a collection called the Peniarth Manuscripts which is included by UNESCO in its UK Memory of the World Register, a list of documentary heritage which holds cultural significance specific to the UK. It is catalogued as MS Peniarth 392D. Following the terminology developed by John M. Manly and Edith Rickert, the manuscript is conventionally referred to as Hg in most editions giving variant readings. History of the manuscript The Hengwrt Chaucer has been in Wales for at least 400 years. This was one of the collection of manuscripts amassed at the mansion of Hengwrt, near Dolgellau, Gwynedd, by Welsh antiquary Robert Vaughan (c.1592–1667); the collection later passed to the newly established National Library of Wales. The Hengwrt manuscript's very early ownership is unknown, but recent research suggests that Chaucer himself may have partly supervised the making of the manuscript, before his death in October 1400, according to the Welsh newspaper The Western Mail. By the 16th century it can be identified as belonging to Fouke Dutton, a draper of Chester who died in 1558. It then seems to have passed into the ownership of the Bannester family of Chester and Caernarfon, and through them was in the possession of an Andrew Brereton by 1625; by the middle of the 17th century it had been acquired by Vaughan. Description Peniarth MS 392 D contains 250 folios with a page size of around 29 x 20.5 centimetres. It is written on heavily stained and rather damaged parchment. Vermin have eaten around nine centimeters from the outer corners of the leaves. It is less complete than the Ellesmere manuscript, and the tales are in an order that is unique to itself. The main textual hand has been identified with one found in several other manuscripts of the period (see below); there are a number of other hands in the manuscript, including one of a person who attempted to fill in several gaps in the text. This has been tentatively identified as the hand of the poet Thomas Hoccleve. There is some illumination in blue, gold and pink, used on the border and on