Leonora tells him how Riccardo , Erminio 's friend , seduced her .
Erminio , Leonora 's brother who is in love with Doralice , arrives in Pisa .
Leonora tells Erminio how Riccardo , brother 's friend , seduced Leonora .
Erminio , Leonora 's brother who is in love with Doralice , arrives in Pisa .