In the "Queste Del Saint Graal", Lancelot can't look directly at the Holy Grail because of his affair with her
[DOC] [TLE] Arthurian Knights: King Arthur: The Stuff of Future Memory-Arthurian ... [PAR] Apr 12, 2009 ... Arthur and his knights riding back to Camelot (from Lancelot du Lac, French, 
early fourteenth century) ....