Chritien de Troyes
The late 12th century French poet who is considered by many to be the father of the Arthurian legends. Chrétien's most notable works included: Érec et Énide [Erec and Enide], Cligés [Cliges], Le Chevalier de la Charrette (Lancelot) [Lancelot - The Knight of the Cart], Le Chevalier au Lion (Yvain) [Yvain - The Knight of the Lion], and Le Conte du Graal (Perceval) [Perceval - The Story of the Grail]. Perceval was left unfinished, perhaps due to Chrétien's death. These romances, which expressed the ideals of chivalry and courtly love, can be read at: http://camelot.celtic-twilight.com/chretien/index.htm
The sources for Chrétien's works are disputed by scholars, but it is accepted by many that they were Celtic in origin. For example, some maintain that the story of Peredur, from the group of ancient Welsh stories in The Mabinogion, is where Chrétien may have conceived inspiration for "Perceval the Welshman".
Laura writes of Chrétien's sources and later versions of the Grail story in Secret History as follows:
"At this point, we have a very good idea where Chretien got the inspiration for his story and the reader will soon see how fruitful this discovery of Littleton and Malcor will turn out to be. But what we notice is that the later writers of sequels and prequels, and alternative versions all claimed to have access to some original, secret documents, described variously as direct transcriptions from Christ himself, from an angel, from a mysterious alchemical work that came either from Britain, Spain or the Far East. We then look back at Chretien's story, and see that his imagery has obvious and traceable elements with precedents in Celtic-Scythian traditions and we realize that what we are observing, post facto, is a huge cover-up going into operation. The astonishing variations of the later Christian and alchemical versions, written by individuals who were practiced in the art of Jewish Kabbala, seem to exactly fit the criteria for disinformation."
Chrétien's patrons while writing were Philip of Alsace, Count of Flanders, and Marie, Countess of Champagne, the daughter of Louis VII and Eleanor of Aquitaine .
See Grail, Perceval, Heroic Archetype, Fisher King