Nielsen Hayden genealogy
Descendants of Hildegard of Egisheim-Dagsburg
Abt 1028 - Abt 1095 (~ 67 years)Father: Gerhard I ( - 1038)
Hildegard of Egisheim-Dagsburg (Abt 1028 - Abt 1095)
Frederick of Büren (Abt 1020 - 1053)(m. Abt 1042)
   └─ Frederick I of Swabia (Abt 1050 - Bef 21 Jul 1105 bur.Lorch Abbey, Baden-Württemberg, Germany)
    Agnes of Germany (1073 - 24 Sep 1143 bur.Klosterneuberg, Austria)(m. Abt 1086)
       ├─ Heilika of Swabia (1087 - Aft 1110)
       │ Freidrich III von Pettendorf ( - 3 Apr 1119)
       │     + Otto II of Bavaria (Between 1083 and 1084 - 4 Mar 1156)
       ├─ Frederick II von Hohenstaufen (1090 - 4 Apr 1147)
       │ Judith of Bavaria (19 May 1100 - Aft 22 Feb 1130 bur.Waldburg, Heiligen Forst, Alsace)(m. 1121)
       │ :   ├─ Frederick Barbarossa, Holy Roman Emperor (1122 - 10 Jun 1190 Saleph River, Cilicia, Anatolia) =>
       │ :   │ + Beatrice of Burgundy (Abt 1144 - 15 Nov 1184 Jouhe, Jura, France)(m. 9 Jun 1156 Würzburg, Germany)
       │ :    + Matthias I of Lorraine (Abt 1119 - 13 May 1176)(m. Abt 1138)
       │ Agnes von Saarbrücken (m. Between 1131 and 1135)
       │    │ + Ludwig II of Thuringia (Abt 1128 - 14 Oct 1172)
       │     + Irmgard von Henneberg ( - 15 Jul 1197)
       └─ Konrad III of Swabia, King of the Romans (1093 - 15 Feb 1152 Bamberg, Bayern, Germany)
        Gertrud von Komburg ( - Between 1130 and 1131)(m. Abt 1115)
            + Isjaslaw II, Grand Prince of Kiev (1096 - 13 Nov 1154)