The principality of Carantania is particularly notable for the ancient ritual of installing Carantanian dukes (or princes, both an approximate translation of Knez/Knyaz/Fürst), a practice that continued after Carantania was incorporated into the later Duchy of Carinthia. It was last performed in 1414, when the Habsburg Ernest the Iron was enthroned as Duke of Carinthia. The ritual took place on the Prince's Stone (Slovene "Knežji kamen", German "Fürstenstein"), an ancient Roman column capital near "Krnski grad" (now Karnburg) and was performed in Slovene by a free peasant who, selected by his peers, in the name of the people of the land questioned the new Prince about his integrity and reminded him of his duties. Later, when the Duchy of Carinthia had fallen to the Habsburgs, the idea that it was actually the people from whom the Duke of Carinthia received his legitimation was the basis of the Habsburgs' claim to the unique title of Archduke.