Then the king said to Ulfin, “Do you know who talked to you yesterday in the likeness of an old man? It is the same man whom you saw crippled today.”

And Ulfin said, “How could a man disfigure himself so? And who is he?”

The king answered, “You can be sure that it is Merlin playing tricks on us, and when he wants to, he will let us know who he is.”

Vulgate Merlin