Though definitive information about the fifteenth-century Scottish poet Robert Henryson remains elusive, the quality of the poetry that bears his name is self-evident: consistently achieving what David J. Parkinson describes as “a rhetorical ideal of brevity replete with significance,” these Middle Scots works possess an interpretive richness, knowledge of classical and medieval authorities, and command of multilingual vocabulary befitting Henryson’s title of “master.” Composed amid Middle Scots’s consolidation into Scotland’s official language in the late Middle Ages, Henryson’s poetry reflects in language and theme this pivotal moment in Scottish history. This edition collects all works attributed to Henryson, including his adaptations and interpretations of Aesop’s Fables; his The Testament of Cresseid, an epilogue to Geoffrey Chaucer’sTroilus and Criseyde; Orpheus and Eurydice; and twelve shorter poems grouped by the available evidence for their attribution to Henryson, all accompanied by glosses, explanatory and textual notes, and a guide to Henryson’s language.