In 905 Bishop Adelbert received from Berengar I of Italy the temporal jurisdiction of the city, which extended to Rozo (969–1001) and Rolando who adhered to the schism of Clement III.

Bishop Tiso (1212–1245) suffered from the tyranny of Ezzelino III da Romano, and Alberto Ricco, O. M. (1255), was imprisoned for preaching against him.

[6] In 1751, pressured both by Austria and Venice, who were exasperated by the numerous discords in the patriarchate of Aquileia, Pope Benedict XIV was compelled to intervene in the ecclesiastical and political disturbances.

In the bull "Injuncta Nobis" of 6 July 1751, the patriarchate of Aquileia was completely suppressed, and in its place the Pope created two separate archdioceses, Udine and Goritza.

[7] The violent expansionist military policies of the French Revolutionary Republic had brought confusion and dislocation to the Po Valley.

Pope Pius VII, therefore, issued the bull "De Salute Dominici Gregis" on 1 May 1818, embodying the conclusions of arduous negotiations.