Ravings of an Old Fool or a Prophecy from the Raven King

Vinculus, the street magician of London, delivered these remarks to Jonathan Strange while he was traveling through the country.

“Two magicians shall appear in England.
The first shall fear me; the second shall long to behold me;
The first shall be governed by thieves and murders;
The second shall conspire at his own destruction.
The first shall bury his heart in the dark wood beneath the snow,
yet shall feel ache;
The second shall see his dearest possession in the enemy’s hand…”

Are these the ravings of lunatic or a prophecy of what is to come?

Jonathan Strange & Mr. Norrell, Susanna Clarke, 2004