Then as to Arthur. In Geoffrey's history he appears mainly as a great continental conqueror--a kind of Welsh Charlemagne. "Many of the most picturesque and significant features of the full-grown legend (as Professor Lewis Jones points out)[1] are not even faintly suggested by Geoffrey. The Round Table, Lancelot, the Grail were unknown to him, and were grafted on the legend from other sources." But he made the Arthurian legends fashionable; he opened for all Europe the hitherto unknown and inexhaustible well of Celtic romance; and it may be said without exaggeration that "no mediæval work has left behind it so prolific a literary offspring as the History of the Kings of Britain."
The value of Geoffrey is not in his fictions about past history, but in his influence on the literature and ideas of the future. He stands at the beginning of a new age: he is the first spokesman of the Age of the new Chivalry. Read his glowing account of Arthur's court, where "the knights were famous for feats of chivalry, and the women esteemed none worthy of their love but such as had given proof of their valour in three several battles. Thus was the valour of the men an encouragement for the women's chastity, and the love of the women a spur to the knight's bravery." Or, as an old French version has it, "Love which made the women more chaste made the knights more valorous and famous." We have here a new conception of love which has profoundly influenced life and thought ever since--love no longer a weakness as in the ancient world, or a sin as it seemed to the ascetic spirit of the Church, but a conscious source of strength, an avowed motive of heroism. And it was round Arthur and his court that the French poets of the next generation wove their romances inspired by this conception--the offspring of the union of Norman strength and Celtic gentleness.
[1] See his paper on Geoffrey of Monmouth (Transactions of the Cymmrodorion Society, 1899), to which I am much indebted.
Gerald the Welshman was certainly one of the most remarkable men of letters that the Middle Ages produced--remarkable not merely for the great range of his knowledge, or the voluminousness of his writings, but for the originality of his views and variety of his interests.