Maria, regina d'Inghilterra
Mary I is infatuated with Riccardo Fenimoore, who has seduced Clotilde, the lost heir to the Talbot title and fiancée of Ernesto Malcolm. Chancellor Churchill reveals Fenimoore’s duplicity and Clotilde’s identity. Mary sentences Fenimoore to death, then repents and asks Clotilde to help release him, but Churchill ensures the execution is carried out.