Frederick IV, Duke of Further of Austria, also known as Frederick of the Empty Pockets was the Habsburg duke of Further Austria from 1402, and Count of Tyrol from 1406, until his death. He was the younger son of Leopold III, Duke of Inner Austria. Frederick's rulership over Tyrol and the scattered Habsburg territories in southwestern Germany and in the Alsace referred to collectively as "Vorderösterreich" (i.e., … Wikipedia
The definitive Wikipedia entry for Frederick IV, Duke of Austria. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Frederick_IV,_Duke_of_Austria
The definitive Wikipedia entry for Frederick IV, Duke of Austria. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Frederick_IV%2c_Duke_of_Austria