Troilus and Criseyde is a poem by Geoffrey Chaucer which re-tells in Middle English the tragic story of the lovers Troilus and Criseyde set against a backdrop of war in the Siege of Troy. It was composed using rime royale and probably completed during the mid 1380's. Many Chaucer scholars regard it as the poet's finest work. As a finished long poem it is certainly more self-contained than the better known but ultimately uncompleted Canterbury Tales.