He was the Duke of Austria from 1395 until 1404, which then included roughly today's Lower Austria and most of Upper Austria, as the other Habsburg dominions were at that time ruled by his relatives of the Leopoldinian Line of the family.
Han var hertug af Østrig fra 1395 til 1404, hvilket dengang dækkede over nutidens Niederösterreich og det meste af Oberösterreich, da de andre Habsburgdomæner var regeret af hans familiemedlemmer i den Leopoldske linje af familien.