The unpublished novel Jacopo Foscari. Storia Veneta del Secolo XV (1838) by the Pisan writer, lawyer and politician Tommaso Paoli is presented for the first time. The novel is based on the story of the trial and conviction of the son of the sixty-fifth doge of Venice. It is an episode already dealt with by Byron in the tragedy The two Foscari but which Paoli proposes in a new guise starting from the choice of the narrative form.