 The fragmented estates of Count Wigger extended via Dornburg an der Saale as far as the area of Zeitz, where he is mentioned from 965–981 as the Margrave of Zeitz.Along with the Ekkehardiners, the counts of Kevernburg, the counts of Schwarzburg and counts of Weimar the Wiggers were a powerful comital family in Thuringia in the 10th to 12th centuries.From about 1130, their descendants called themselves after their family seat, Bilstein Castle, in the Höllental valley west of Albungen, today a village in the borough of Eschwege.