What played the mischief with Arthur was that Geoffrey of Monmouth, who became bishop of S. Asaph in 1152, published, about 1140, his fabulous _History of the Britons_, which elevated Arthur into a hero. Geoffrey had an object in view when he wrote this wonderful romance. The period was one in which the Welsh had been horribly maltreated, dispossessed of their lands, their churches taken from them and given to Normans, who neither understood their language nor regarded their traditions. The foreigners had castles planted over the country filled with Norman soldiery, tormenting, plundering, insulting the natives. Poor Wales wept tears of blood. Now Henry I. had received the beautiful Nest, daughter of Rhys, king of South Wales, as a hostage when her father had fallen in battle, and, instead of respecting his trust, he had wronged her in her defenceless condition in a cruel manner, and had by her a son, Robert, who was raised by him to be Duke of Gloucester. To this Robert, half Welsh, Geoffrey dedicated his book, a glorification of the British kings, a book that surrounded the past history of the Welsh with a halo of glory. The book at once seized on the imagination of English and Normans, and a change took place in the way in which the Welsh were regarded. The triumph of the Saxon over the Briton came to be viewed in an entirely new light, as that of brutality over heroic virtue. Geoffrey succeeded in his object, but he produced bewilderment among chroniclers and historians, and seriously influenced them when they began to write on the history of England. [Illustration: KING ARTHUR] Now, although all the early portion of Geoffrey's work is a _tour de force_ of pure imagination, yet he was cautious enough as he drew near to historic times, of which records were still extant, to use historic facts and work them into his narrative, so that in the latter portion all is not unadulterated fable; it is a hotch-potch of fact and fiction, with a preponderance of the latter, indeed, but not without some genuine history mixed up with it. The difficulty his book presents now is to discriminate between the false and the true.