Willibirg von Dillingen - Abt 1268 (d. 1268) Parents Willibirg of Truhendingen Hartmann IV. von Dillingen Children Willbirg (Wilbirg, Wilpirg) of Helfenstein Agnes of Helfenstein Ulrich III, Count of Helfenstein Siblings Hartmann of Dillingen Udilhild von Dillingen Partners Ulrich II, Count of Helfenstein