... Be it known that Morcant, king, came a-hunting to the bank of the river Nadhauon, and threw his hawk upon a duck, and both at once hawk and duck crossed the river in their flight.  And suddenly there came an eagle from the sea shore to seize the hawk.  Which when King Morcant saw he was exceeding sorrowful, but in a moment a foster son of the king, named Guengarth, coming up on horseback with shield and sword and lance, hurled himself into the river, and with no little bravery snatched the hawk from the grip of the eagle.  And, moreover, lightly brought the hawk with the duck to the hand of Morcant the king, and by such achievement delighted him not a little.  Whereupon Morcant said to Guengarth:  "Behold, I grant to thee the villa Cadroc as an inheritance stretching from the city Trotguid as far as the river Nadavan, and in breadth from the spring Guengarth as far as another spring Guengarth." (Tribal System in Wales, Seebohm, 1904)