The Testament of Cresseid is a narrative poem of 616 lines in Middle Scots, written by the 15th-century Scottish makar Robert Henryson. It is his best known poem.[1] It imagines a tragic fate for Cressida in the medieval story of Troilus and Criseyde which was left untold in Geoffrey Chaucer's version. Henryson's cogent psychological drama, in which he consciously resists and confronts the routine depiction of Cressida (Cresseid) as simply 'false', is one of the features that has given the poem enduring interest for modern readers and it is one of the most admired works of Northern Renaissance literature. A modern English translation by Seamus Heaney, which also included seven of Henryson's fables from The Morall Fabillis, was published in 2009.