Chrétien de Troyes was a French poet and trouvère known for his writing on Arthurian subjects such as Gawain, Lancelot, Perceval and the Holy Grail. Chrétien's chivalric romances, including Erec and Enide, Lancelot, Perceval and Yvain, represent some of the best-regarded works of medieval literature. His use of structure, particularly in Yvain, has been seen as a step towards the modern novel.