 This person held the office of Burgrave of the Wartburg.With the appointment of the counts of Wartburg, who appear at the same time in the 13th century as the burgraves of Brandenburg at the neighbouring Brandenburg Castle, a side line of the counts of Bilstein were elevated to high status, although they were not related by blood to the Ludowingian family.In 1301, Count Otto II of Bilstein, with the consent of his wife, Catharina, sold the Bilstein fief and subsequently also his allodial estate to Landgrave Henry I of Hesse.