Jealousy

Jealousy in the Decameron is a force that converts uncertainty into control. A husband may treat a fragment of evidence as certainty, or use suspicion to restrict his wife’s movements and choices; in turn, jealous desire can be manipulated by a clever lover or exploited by a hypocritical abbot. The stories expose the danger of jealousy not simply through its intensity, but through the power it gives men to police women and the consequences that follow when suspicion is mistaken for knowledge.

Suspicion as Evidence and Threat

The wager between Bernabo Lomellini and Ambrogiuolo of Piacenza shows how quickly jealousy can become a threat of violence. Ambrogiuolo returns from his intrusion into Ginevra’s bedroom with her belongings and a specific physical detail: a mole beneath her left breast, surrounded by reddish-gold hairs. Bernabo recognizes the objects but initially argues that they could have been obtained from a servant, so they do not prove that Ginevra has been unfaithful. Ambrogiuolo’s more intimate description changes the force of the evidence. Bernabo’s face betrays his belief before he speaks; he concedes the wager and pays Ambrogiuolo.

The scene makes the leap from knowledge to judgment visible. Ambrogiuolo’s detail establishes that he entered the bedroom and saw Ginevra, but it does not establish the sexual betrayal he claims. Bernabo nevertheless accepts the claim as proof and leaves for Genoa with a deadly intention toward his wife. Jealousy thus acts as the bridge between an intrusion and a punishment: a fact that admits more than one explanation becomes, in Bernabo’s mind, a verdict. The danger lies not only in his suspicion, but in his power to make that suspicion consequential.

Jealousy as a Vulnerability to Exploit

In Naples, Ricciardo Minutolo’s desire for Catella is frustrated by her devotion to her husband, Filippello Fighinolfi. The story presents Catella as jealous of Filippello, imagining that every bird in the air might carry him away. Ricciardo’s ingenuity turns that anxiety into an instrument. He pretends to have transferred his affection to another woman and makes a public show of courting her, until Catella herself believes that his love for her has passed.

That apparent change matters because it alters Catella’s behavior. No longer guarded against Ricciardo as a rejected suitor, she greets him familiarly, as a neighbor. When he hints that Filippello is involved in an affair with Ricciardo’s own wife, Catella’s jealousy immediately sharpens into impatience to know what he means. She asks him to explain and promises secrecy, believing that he can show her the truth by experience. The episode’s setup reveals the mechanism of the deception: Ricciardo does not overcome Catella’s suspicion but redirects it, using her fear of her husband’s infidelity to draw her toward a supposed proof. Here jealousy makes its subject easier to manipulate precisely because it feels like vigilance.

Jealousy as Confinement

The tale of Ferondo places jealousy within marriage as a condition of confinement. The abbot, who has fallen in love with Ferondo’s wife, recognizes that Ferondo is simple in most matters but shrewd in guarding her. When the wife confesses her misery, she describes a marriage in which her husband’s excessive jealousy leaves her unable to live without tribulation. The abbot presents Ferondo’s jealousy as an illness that can be cured only by sending him to purgatory, and she agrees to his scheme in the hope that she will not have to remain imprisoned by it for life.

The cure is a fraud serving the abbot’s desire. He drugs Ferondo and stages his apparent death, then later lets him emerge from the tomb convinced that he has returned from purgatory through the abbot’s prayers and those of Saint Benedict and his wife. Ferondo falls at the abbot’s feet in gratitude and returns to his village claiming to have been raised from the dead. The staged miracle gives the abbot a means to remove the jealous husband temporarily while presenting the removal as religious punishment and restoration. The plot makes jealousy both a real burden on the wife and a weakness that another man can exploit.

Gender, Control, and Narrative Judgment

The stories’ treatment of jealousy connects private marital suspicion to women’s restricted freedom. In the frame narrative, women are described as spending much of their time within their chambers, subject to the wishes and commands of fathers, mothers, brothers, and husbands; unlike men, they have fewer ways to distract themselves from sorrow. In her introduction to a story about a jealous husband, Fiammetta argues that husbands who are jealous without cause confine their wives especially harshly, even on days when other people enjoy rest and diversion. That framing makes jealousy a practice of control, not merely a feeling.

Across these episodes, the consequences differ, but the underlying pattern recurs: jealousy claims to protect marital honor while empowering a husband to monitor or punish his wife. Bernabo treats Ambrogiuolo’s account as sufficient grounds for murderous intent; Ferondo’s possessiveness becomes a prison from which his wife seeks relief; and Catella’s fear of betrayal is turned against her by Ricciardo. The tales do not treat every suspicion as identical, nor do they erase the danger and constraint faced by the women. Instead, they show how jealousy distorts judgment, narrows women’s choices, and can be redirected by those who understand how powerfully it governs a marriage.