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).
References: Smith (ed.), Index (1989), item GrT 163, 95; Nelson (ed.), Union First Line Index. Mar. 2010. Folger Shakespeare Library. 19 March 2010. <http://firstlines.folger.edu/detail.php?id=137227>
Contents: Autograph fair copy, untitled but numbered 9. and identified on f. 3r as "9. The Triumphs of Owen, a fragment", headed "Prefix...Owen succeeded his Father Griffin in the principality of North-Wales, A:D: 1120. this battle was fought near forty years afterwards. (from Mr Evans's Specimens of the Welch poetry. Lond: 1764. 4to)", including an explanatory note of "The Dragon-Son", used as printer's copy for Poems (1768), in MS instructions to Dodsley, sent in a letter, [1?] February 1768.