Career
Gabriel acted as Ferdinand"s treasurer and archchancellor. His economic measures however ultimatively failed as his purported self-serving manners met with fierce opposition by the Austrian and Tyrolean aristocracy, who called him an "archarian jew" and "stinking heretic". In 1523 he was elevated to the rank of an Imperial Freiherr (Baron) and Lord of Ehrenberg Castle in Tyrol as well as of Freyenstein and Karlsbach in Austria.
On 10 March 1524 he further received the possessions of the extinct Counts of Ortenburg in Carinthia, which were last held by Count Ulrich II of Celje, together with the Ortenburg comital title, which earned him the enmity of the Bavarian Ortenburg dynasty.
As early as in 1526, he was forced to resign from his positions, and was succeeded by Bishop Bernardo Clesio. Salamanca nevertheless was able to maintain his fiefs.
He took his residence at Spittal an der Drau in Carinthia, where he had a luxuriant Renaissance palace built by Italian architects from 1533, today known as Schloss Porcia. Salamanca, however, did not live to see it completed.
In compensation for the loss of his offices he had received the Habsburg bailiwick of Ensisheim in Alsace, where he died in 1539.
