Robert Henryson was a Scottish poet and a prominent figure of the 15th century. He is best known for his works that reflect the themes of morality and human experience. His most famous poem, "The Testament of Cresseid," is a continuation of Geoffrey Chaucer's "Troilus and Criseyde," exploring the consequences of love and betrayal. Henryson was also a member of the Scottish Chaucerians, a group of poets influenced by Chaucer's style. His writings often incorporated allegory and fables, showcasing his skill in storytelling. In addition to poetry, he contributed to the development of the Middle Scots language, leaving a lasting impact on Scottish literature.