The Lancelot-Grail Romance

Composed c. 1210-20, this is a five-part romance in French prose, based on the Perceval of Chrétien de Troyes (fl. last quarter 12th c.) and its Continuations, and on Chrétien's verse romance of Lancelot, also known as Le Chevalier de la Charette (The Knight of the Cart) which is about the adulterous relationship between Lancelot and Queen Guinevere. It also draws in material from Welsh and Latin sources about King Arthur and about Merlin the Enchanter, such as the Mabinogion and Geoffrey of Monmouth's Historia regum britanniae (History of the Kings of Britain).

The Lancelot-Grail was immensely popular: close to 200 copies survive, most of them illustrated. The story was usually copied in several volum,es because it is so long.  Two of the five branches, the first, entitled L'Estoire del saint Graal (The History of the Holy Grail), and the fourth, entitled La Queste del saint Graal (The Quest for hte Holy Grail), are about the Grail.  The Estoire relates its early history, beginning with Joseph of Arimathea taking the cup used by Christ at the Last Supper and collecting Christ's blood in it at the Entombment, entrusting it to his son Josephé, first Christian bishop according to the Estoire, their journey to England with the Grail, and their numerous conversions, ending with the transmission of the  Grail to Alain and his lineage.  The second branch is the Melin, about Merlin the Enchanter and his mentor Blaise, Merlin's prophecies, the election of Arthur as King of Britain and his marriage to Guinevere.  Third is the very length Lancelot, beginning with the birth of Lancelot, son of King Ban of Benoic, his father's loss of lands and death, and Lancelot's upbringing by the Lady of the Lake, his becoming a knight at Arthur's court and his love affair with Queen Guinevere, which gives him the strength to achieve great deeds in tournament and battle, and to save Arthur's kingdom several times. Lancelot is deceived into begetting a son with the daughter of the Grail King, Pelles.  This is Galaad, who in the fourth branch of the story, La Queste del saint Graal, will become the Grail winner, along with Perceval and Boort; Lancelot fails in the Quest because he is impure.  At the end of Queste, the Grail returns to heaven, Galaad and Perceval die, and Boort returns to Arthur's court to tell the adventures of the Quest.  The story ends with the events leading up to the downfall of Arthur's kingdom in the fifth branch, La Mort Artu (The Death of King Arthur), the source for Malory's Mort d'Arthur