Agnes of Truhendingen noblewoman († 1294) (d. 1294) Parents Frederick IV of Truhendingen Agnes Baronin von Graisbach Children Frederick I, Count of Fürstenberg Margaret von Fürstenberg Egon of Fürstenberg Elizabeth von Fürstenberg Siblings Friedrich I. von Truhendingen Willibirg of Truhendingen Partners Henry I, Count of Fürstenberg