In 1803 , Salzburg was secularised ( stopped being control by the church ) as the Electorate of Salzburg . The former Grand Duke Ferdinand III of Tuscany ( brother of Emperor Francis II ) was made elector . In 1803 , Salzburg was secularised as the Electorate of Salzburg for the former Grand Duke Ferdinand III of Tuscany ( brother of Emperor Francis II ) , who had lost his throne .