The Diocese of Bergamo is a Latin diocese of the Catholic Church in Italy, and is a suffragan of the Archdiocese of Milan. Geographically, Bergamo stood between the mainland interests of the Republic of Venice, and the territory of the Duchy of Milan. The duchy was regularly contested by the French and the Holy Roman Empire, which brought about repeated military operations. Internally, from the 12th to the 15th century, there was the usual party strife between the Guelphs, who generally supported the political and religious policies of the Papacy; and the Ghibellines, who generally supported the Emperors. As Kings of Italy, the emperors were feudal overlords of Lombardy.

The Diocese of Verona is a Latin diocese of the Catholic Church in northern Italy. The diocese belongs to the Ecclesiastical Province of Venice. The bishop of Verona has his seat in Verona, Veneto. The episcopal throne is in the cathedral, which had originally been dedicated to S. Maria Matricolare and S. George.