Mantua. Guido Bonacolsi, old and ill, joins his brother Rainaldo Bonacolsi in his government. Rainaldo will become known in Modena as “Duke Passerino” due to his short stature, but his slender body and lively temperament. Another brother, Bonaventura, is fat, pale, and flabby, and is nicknamed Butirrone or Botirone.
