The dissensions between Cardinal Nicholas of Cusa (1450-1464), appointed by Pope Nicholas V as Bishop of Brixen, and the Austrian Archduke Sigismund of Habsburg were also unfortunate; the cardinal was made a prisoner, and although the pope placed the diocese under an interdict, Sigismund came out victor in the struggle.
:‘Castrum de Corneit’ is documented for the first time as fief of the Bishopric of Brixen.
The castle was first named in a document from 1279, as castrum Praesile and it is believed that the lords of Völs, feudatories of the Bishopric of Brixen, had built the castle here by 1200.
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Thus, after Henry of Gorizia-Tyrol had died in 1335, Emperor Louis IV gave Carinthia and southern Tyrol including the overlordship of Trent and Brixen to the Habsburg dukes, who themselves could refer to their mother Elisabeth of Gorizia-Tyrol, sister of deceased Henry.
The present-day diocese was created by a papal bull of 6 August 1964, when the South Tyrolean parts of the Trento diocese around Bolzano and Merano were merged into the former Diocese of Brixen.