Summary: Written probably in 1760 or 1761 when Gray was living in London. Based on a Latin translation by Evan Evans of the original Welsh "Arwyain Owain Gwynnedd" by Gwalchmai ap Meilyr. First published in Poems (1768).
Contents: Transcript in an unidentified neat and legible hand, entitled "The Triumphs of Owen. A Fragment" (p. 93) ("Ode X." [p. 95]). The poem, which includes Gray's notes and the additional lines after l. 26 by Mason, is part of a section called "Poems", which is separately paginated and has its own table of contents (p. 129), in a volume entitled Gray's Poems. The book carries the bookplate of Gray's friend and biographer William Mason.
References: Parks, Stephen et al. (ed.), Osborn Collection First-Line Index. New Haven: Beinecke Library, Yale University, 2005, 624, item O1156; Nelson (ed.), Union First Line Index. Mar. 2010. Folger Shakespeare Library. 16 April 2010. <http://firstlines.folger.edu/detail.php?id=10633>
Contents: Transcript in the hand of John Freeman Milward Dovaston, entitled "The triumphs of Owen Gwynedd a fragment", in his autograph Select, and Miscellaneous Poems, Scraps, Mottos &c, 1773 and later, a Commonplace book of verse by Dovaston and others.