chunk: When the disguised Medina speaks to the king, he becomes convinced of the legitimacy of the king's plot to murder his niece as well as Balthazar's loyalty. To appease the rebellious faction, the king proposes a marriage between Onaelia and Cockadillio, a courtier, an offer which is accepted. The queen and Malateste again confer, deciding to poison Onaelia. During the marriage ceremony, the king takes up the poisoned cup meant for Onaelia, to the queen's and Malateste's consternation. While the king is drinking, Malateste admits their crime and is stabbed to death by the faction. While dying, the king passes the crown to Sebastian and commands that the queen be sent back to Florence with treble dowry. Onaelia and Balthazar are appointed to protect Sebastian in his youth.