A manuscript containing transcripts mainly by David Saunders (Dafydd ap Tomas Saunders), Lampeter, afterwards of Merthyr Tydfil, with some by David Jones (Glaswalch), Lampeter, and comprising awdlau and other poetry by David Saunders, David Jones and others; Hyfforddiad I beroriaeth Eglwys; hymn- and psalm-tunes; the rules of Welsh poetry; a list of Welsh poets; etc.