What happens to Llewelyn after he begins the trip back to Caus Castle from Shrewsbury?

When Llewelyn is traveling alone back to his stepfather's castle, Caus Castle, he runs into Stephen de Hodnet. As the two get to know each other, Stephen's brother, Walter joins them. Walter is a bull who threatens to break Llewelyn's arm if he does not disparage his own countrymen, leaving Llewelyn humiliated and feeling as though he has betrayed Wales and his countrymen.