book I
, cap. iii. tells how "in the greatest church in London, there was seen in the churchyard a great stone foursquare, and in the midst thereof was like an anvil of steel a foot on high, and therein stuck a fair sword naked by the point, and letters there were written in gold about the sword that said thus: whoso pulleth out this sword of this stone and anvil is rightwise king born of all England." Which sword was drawn out by Sir Arthur. Cf.