Heironymus was born in Vienna on 31 May 1732 to the House of Colloredo-Mansfeld. From 1747 he was a member of the Cathedral of Salzburg, and from 1751 a member of the cathedrals of Passau and Olomouc. In 1762 he became the Bishop of Gurk, and in 1772 was appointed the Archbishop of Salzburg.
Archbishop of SalzburgEdit
Hieronymus was an advocate of the reforms of the Holy Roman Emperor Joseph II, and he introduced his reforms into the prince-bishopric. He placed limits on the number of clergymen and closed several monasteries. In 1786 he sided with the Archbishops of Trier, Cologne, and Mainz, and the Bishop of Freising against the influence of the Emperor into their affairs, as well as his attempts to obtain Bavaria. The Archbishops attempted to obtain greater independence from Rome and threatened to hold an Imperial Diet if their demands were not met.
In 1800 the Archbishop had to flee to Brünn then to Vienna from advancing French soldiers. The archbishopric was secularised in 1803 and its territories given to the new Duke of Salzburg, although Heironymus remained the titular Archbishop until his death in 1812.
Heironymus is most famous for his patronage of the composer Wolfgang Amadeus Mozart. At first tolerant to him, his absences and numerous arguments eventually led him to dismiss him from service with the words, "Mag Er geh'n, Ich brauch' Ihn nicht!" ("May he leave, I don't need him!").
Hieronymus of Colloredo
|Joseph I Maria of Thun||Bishop of Gurk|
1761 - 1772
|Joseph II Anthony of Auersperg|
|Sigismund III of Schrattenbach||Archbishop of Salzburg|
1772 - 1812
|Sigismund Christopher of Zeil und Trauchburg|