Ambrogiuolo of Piacenza

Ambrogiuolo of Piacenza is the boastful merchant whose wager against Bernabo Lomellini converts a debate about women’s chastity into a calculated fraud. His supposed proof that Ginevra has been unfaithful rests not on an affair but on concealed entry, observation, and theft: he manufactures the appearance of sexual conquest while leaving her asleep and unaware.

Identity and Introduction

Ambrogiuolo enters the story as a young Italian merchant staying in Paris. During a convivial supper at an inn, the merchants discuss the wives they have left at home. Most assume that wives, like husbands, will take pleasure elsewhere when opportunity arises. Bernabo alone insists that his wife, Ginevra, is exceptionally accomplished, wise, and discreet, and that she would remain faithful even if he were away for years.

Ambrogiuolo singles out Bernabo’s assurance for mockery. He argues that desire is natural and that women, whom he describes as less constant than men, cannot reliably resist a determined suitor’s prayers, flattery, and gifts. He presents this as worldly knowledge, claiming experience with many women. His confidence is thus both an opinion about women and a claim to expertise: he treats sexual conduct as something he understands through repeated personal trials.

The Wager and Its Stakes

Bernabo answers that discreet women guard their honor more carefully than men do. The disagreement escalates from argument to a test: Bernabo first offers his head against a thousand gold florins if Ambrogiuolo can bring Ginevra to yield. Ambrogiuolo instead proposes that Bernabo stake five thousand gold florins against his own thousand. The wager makes Bernabo’s trust in his wife financially measurable, while Ambrogiuolo stakes money on the power of his own alleged skill.

The terms also expose how little the two men agree about what would count as proof. Ambrogiuolo claims he can make Ginevra do his pleasure; Bernabo accepts the challenge to establish her honesty. Yet Ambrogiuolo’s eventual success in winning the wager does not establish that the sexual encounter he claims ever occurred. The distinction between an event and convincing evidence of it is central to his deception.

Infiltration and Fabricated Proof

Ambrogiuolo travels to Genoa with details about Ginevra’s household and way of life. He makes an acquaintance with a poor woman who is often at the house and whom Ginevra favors. When he cannot persuade her to help him otherwise, he bribes her to carry a specially made chest into Ginevra’s bedchamber, presenting it as something to be left in the woman’s care for a few days.

At night Ambrogiuolo emerges from the chest and studies the room, its paintings, and its furnishings. He finds Ginevra asleep beside a little girl. He uncovers Ginevra quietly and observes a mole beneath her left breast, surrounded by several reddish-gold hairs. Although her beauty tempts him to risk lying beside her, he does not do so; knowing her reputation for resistance, he waits instead. During two nights in the chamber, he takes a purse, a night-rail, rings, and girdles from a coffer, then hides again in the chest. Ginevra remains unaware of his presence.

When the woman retrieves the chest, Ambrogiuolo rewards her and returns to Paris before the agreed term. He summons the merchants who witnessed the wager and claims victory. To support his account, he describes the chamber and its paintings and displays the stolen possessions. The objects establish that he has gained access to Ginevra’s household, but they do not establish that she welcomed him or had an affair with him.

Exposure and Narrative Significance

Bernabo recognizes the room and the belongings, yet initially points out that Ambrogiuolo could have learned about them from a servant or obtained them by other means. Ambrogiuolo then supplies the intimate detail he observed: the mole and its reddish-gold hairs. Bernabo’s anguish and altered expression reveal that the description is accurate. He acknowledges that Ambrogiuolo has won and pays him in full.

Ambrogiuolo’s triumph depends on making knowledge acquired through intrusion function as evidence of consent. The mark on Ginevra’s body is true; the sexual story attached to it is not supported by what he actually did. His theft and covert observation allow him to exploit Bernabo’s confidence in visible, verifiable details, while the wager rewards the appearance of conquest rather than its reality. After collecting the money, he leaves the scene as Bernabo turns toward Genoa with a fell intent against Ginevra. The account therefore presents Ambrogiuolo not as a successful seducer but as a practiced deceiver whose performance of sexual mastery puts another person in danger.