 Styling himself "Freiherr auf Landskron and Wernberg" he made it to Burggrave und Speaker of the Estates, and managed to make the Khevenhüller family one of the wealthiest in the German Reich.He also figured as the head of the Protestants in Carinthia.When in the course of the counter-reformation Emperor Ferdinand II abolished the nobility's religious freedom in the Habsburg lands, the Protestant members of the Khevenhüller family were forced to abandon their possessions in Carinthia and emigrated to Germany in 1628.