A wealthy bachelor from the aristocratic della Casa family, Giovanni engages in a controversial relationship with Lusanna. His ties to elite circles, including the Medici family, play a critical role in the unfolding events.

The most powerful religious figure in Florence, known for his commitment to fairness and justice, Antoninus presides over Lusanna's case. He makes pivotal decisions that reflect his dedication to protecting the city's poorer citizens.

A notary in Archbishop Antoninus's ecclesiastical court, Ser Filippo documents the events of the legal proceedings involving Lusanna's case. His detailed recordings provide insight into the court's procedures.

The influential patriarch of the Medici family, Cosimo wields considerable power in Florence through an elaborate patronage network. His connections and possible influence are speculated to impact the outcome of the legal proceedings.