 Up to , continental Arthurian romance was expressed primarily through poetry; after this date the tales began to be told in prose.The most significant of these 13th-century prose romances was the Vulgate Cycle (also known as the Lancelot-Grail Cycle), a series of five Middle French prose works written in the first half of that century.These works were the "Estoire del Saint Grail", the "Estoire de Merlin", the "Lancelot propre" (or Prose "Lancelot", which made up half the entire Vulgate Cycle on its own), the "Queste del Saint Graal" and the "Mort Artu", which combine to form the first coherent version of the entire Arthurian legend.