Agnes of Helfenstein Heiress of Sigmaringen; Countess of Montfort-Bregenz Parents Ulrich II, Count of Helfenstein Willibirg von Dillingen Children Hugh of Montfort-Bregenz Katharina of Montfort-Bregenz Siblings Ulrich III, Count of Helfenstein Willbirg (Wilbirg, Wilpirg) of Helfenstein Partners Ulrich, Count of Montfort-Bregenz (d.1287)