Family/Spouse: Pfalzgraf of Swabia Frederick von Filsgau. Frederick (son of Count of Filsgau Walther von Filsgau) was born in 960; died in 1027. [Group Sheet] [Family Chart]
Adelheid married Pfalzgraf of Swabia Frederick von Büren about 1016 in Germany. Frederick was born about 990 in Germany; died about 1070. [Group Sheet] [Family Chart]
Frederick married Hildegarde von Swabia about 1045 in Germany. Hildegarde (daughter of Duke of Swabia II Otto) was born about 1024 in Swabia. [Group Sheet] [Family Chart]
Frederick married Princess of Germany Agnes about 1089 in Hohenstauffen, Germany. Agnes (daughter of Holy Roman Emperor IV Heinrich and Bertha de Savoy) was born in 1072 in of Klosterneuburg, Austria; died on 24 Sep 1143; was buried in Klosterneuburg, Austria. [Group Sheet] [Family Chart]