After Pollexfen recovers from the attack, he sets out to duel Grandison. However, Grandison refuses on the grounds that dueling is harmful to society. After explaining why obedience to God and society are important, Grandison wins Pollexfen over and obtains his apology to Byron for his actions. She accepts his apology, and he follows with a proposal to marriage. She declines because she, as she admits, is in love with Grandison. However, a new suitor, the Earl of D, appears, and it emerges that Grandison promised himself to an Italian woman, Signorina Clementina della Porretta. As Grandison explains, he was in Italy years before and rescued the Barone della Porretta and a relationship developed between himself and Clementina, the baron's only daughter. However, Grandison could not marry her, as she demanded that he, an Anglican Protestant, become a Catholic, and he was unwilling to do so. After he left, she grew ill out of despair, and the Porrettas were willing to accept his religion, if he would return and make Clementina happy once more. Grandison, feeling obligated to do what he can to restore Clementina's happiness, returns to Italy; however, Clementina determines she can never marry a "heretic", and so Grandison returns to England and Harriet who accepts him. They are married; and everyone is accorded their just desserts.