Ambrogiuolo appears in Filomena’s second tale (II, 9). He is a merchant from Piacenza who “proves” that Zinerva isn’t as good as Bernabò thinks by sneaking into her bedroom, stealing some of her belongings, and claiming she gave them to him as lover’s gifts. Cheating when he realizes he can’t seduce Zinerva shows his unscrupulous character, as does his continuing to claim that he did seduce her seven years later. Zinerva takes advantage of his greed to lure him to Alexandria, where she reveals his actions, and he is punished with a fittingly awful death.