Perceforest or Le Roman de Perceforest is an anonymous prose chivalric romance, written in French around 1340, with lyrical interludes of poetry, that describes a fictional origin of Great Britain and provides an original genesis of the Arthurian world. The lengthy work in six books takes its inspiration from the works of Geoffrey of Monmouth, Wace, Orosius and Bede, the Lancelot-Grail cycle, the Alexander Romance genre, Roman historians, medieval travellers, and oral tradition. Perceforest forms a late addition to the collection of narratives with loose connections both to the Arthurian Romance and the feats of Alexander the Great.