Burchard I, Duke of Swabia Duke of Swabia (0855–0911) Parents Adalbert II, Count of Thurgau Judith von Friaul Children Udalrich von Schwaben Burchard II of Swabia Dietbirg von Thurgau Siblings Adalbert III de Thurgovie Dietbirg von Thurgau Adalgunde von Burgund Partners Liutgard of Saxony