The Auersperg cadet branch, named after the castle of Šumberk in Lower Carniola, was influential throughout the 16th century. Wilhelm Auersperg (called "the Rich", cca. 1462–1507) and his nephew Hans (1480–1529) were regents ("Landeshauptmann") of Carniola. Hans's son Wolfgang-Engelbert was considered one of the most educated noblemen in Carniola, and a strong supporter of Lutheranism. His son Andreas von Auersperg was one of the military commanders during the decisive Battle of Sisak against the Ottomans, gaining the nickname "Carniolan Achilles". In the early 17th century, the Šumberk cadet line, which was considered wealthier and more influential than the main one, died out; its estates were transferred back to the main line, and were later mostly inherited by the so-called "princely branch" of the family.