The is a legend that Giles in his early manhood bartered his soul for a knowledge of the dark secrets of nature with a view to obtaining a position of wealth and rank in the medical world. Setting out for Paris where he hoped to study medicine, he was accosted on the way by a charming stranger who persuaded him to abandon his journey to France and to turn aside to Toledo, where he spent seven years as an apprentice in the art of magic and agreed to trade his soul for the fulfilment of his ambition. He then resumed his journey to Paris where he obtained both riches and fame, performing miracles of healing; but being converted by a frightful vision he returned to Spain and sought the habit of the order at Valencia, where after seven years of the severest penance and the greatest agony of mind on account of his infamous bargain