By the 12th century, European literature was rich with tales of a procession carrying a group of objects closely tied to the Passion of Christ--the Holy Grail, the lance that pierced Christ's side, the sword used to behead John the Baptist, and a dish from the Last Supper. While legends of the quest for the Holy Grail continue to grip the popular imagination, the other relics, once closely associated with the Grail legends, receive little mention...