Act III sees the entrance of Owen Tudor, who instructs his colonel to leave him alone to see Catharine. The Colonel expresses his concern at leaving Tudor alone, however follows his orders and leaves. Catharine then enters, and the two lovers reunite. Elsewhere, Isabella reluctantly gives over the outer key to the castle to Malavill, believing it to be for Clarence to enter.
Clarence receives a letter from Thyrrold, threatening to fight him over his courtship with his supposed wife, Isabella. This confirms Clarence’s suspicions given to him by his brother, that Isabella has deceived him. The third act ends with Gloucester reporting to Edward that his plan for vengeance against Owen Tudor is set in motion, and they set out to enter Ludlow Castle.
A visual diagram of the play’s military and romantic relationships.