The
Council of Trent, in its 23rd session in 1562, decreed that each diocese, to the extent that it was feasible, should have a diocesan seminary for the training of priests. As early as 1567, Archduke Ferdinand II and Cardinal Madruzzo began to draw up plans, but financial difficulties as well as problems with a site for the institution impeded progress. The Salzburg provincial synod of 1569 was encouraging, and again in 1576, but not with financial aid. Madruzzo's coadjutor and successor, Prince-Bishop Johann Thomas von Spaur (1578–1591), kept the plan alive, with the support of the Jesuit
Peter Canisius, but still the problem was financial, even with a proposed tax on the Canons. The diocesan seminary of Brixen was finally founded by Bishop Johann Thomas Spaur in 1607, in the Kirchmayr house in the Runggad. It was not until 1764–1767 that the seminary acquired its own building. In 1779, the cathedral church, dedicated to the taking up (Assumption) of the body of the Virgin Mary into heaven, and to Ss. Cassianus, Ingenuinus, and Albuinus, had a Chapter composed of two dignities and nineteen Canons. On 29 September 1822, in the bull "Quae Nos Gravissimi", on a petition presented by
Count Antal Apponyi, ambassador of the Emperor Francis I to the Holy See,
Pope Pius VII granted the emperor the privilege of nominating the bishops of Trent and Brixen. The bull states that this was done with the consent of the Chapters of the two cathedrals (who thereby lost their right to free election of their bishop), as well as of the bishop of Brixen. On 7 March 1825,
Pope Leo XII issued the bull "Ubi Primum", in which he named Salzburg as the metropolitan of the ecclesiastical province, and assigned as suffragans the dioceses of Trent, Brixen, Gurk, Seckau, and Lavant. ==Bishops==