The Da Vinci Code contains many word plays that add fun and mystery to its plot; the twists made with Sangreal are clever but inaccurate (46, 160). Supposedly, the French word for "Holy Grail" is derived from the ancient words sang real, translated to mean "royal blood" (250). However, legends about the existence of a grail did not originate until the medieval stories of Arthur and his knights were created; in these works the term was Sankgreall, and the term "grail" comes from the Latin gradale, which means "platter." In Chretien's poem Perceval (from 1170), the grail was thought of as a flat dish, not a chalice. (The literal translation of "royal blood" into French would be le sang royal, which, as a native of France, the fictional Sophie would know.) On the "Sangreal" documents Dan Brown references (256), see hidden documents; purist documents; see also Holy Blood, Holy Grail; Holy Grail; Knights Templar.