Nielsen Hayden genealogy
Descendants of Agnes of Poitou
Abt 1025 - 1077 (~ 52 years)Father: William III of Poitou (969 - 31 Jan 1030)
Mother: Agnes of Burgundy (Abt 995 - 10 Nov 1068 bur.Abbey of St. Nicolas de Poitiers, Vienne, Poitou-Charentes, France)
Agnes of Poitou (Abt 1025 - 14 Dec 1077 Rome)
Heinrich III, Holy Roman Emperor (28 Oct 1016 - 5 Oct 1056 Bodfeld, Harz, Germany)(m. 21 Nov 1043)
   ├─ Mathilde (1045 - 12 May 1060)
   │ Rudolf von Rheinfelden (Abt 1025 - 15 Oct 1080 Merseburg, Saxony)
   │    └─ Agnes von Rheinfelden ( - 29 Dec 1111)
   │     Berchtold II of Swabia and Zähringen (Abt 1036 - 12 Apr 1111)
   │        └─ Konrad I of Zähringen and Burgundy (Abt 1090 - 8 Jan 1152) =>
   │         + Clemence de Namur ( - 28 Dec 1158)
   └─ Heinrich IV, Holy Roman Emperor (11 Nov 1050 Goslar, Lower Saxony, Germany - 7 Aug 1106 Liège, Belgium)
    Bertha of Turin (1051 - 27 Dec 1087 Mainz, Hessen, Germany)(m. 13 Jul 1066)
       └─ Agnes of Germany (1073 - 24 Sep 1143 bur.Klosterneuberg, Austria)
        Frederick I of Swabia (Abt 1050 - Bef 21 Jul 1105 bur.Lorch Abbey, Baden-Württemberg, Germany)
        : (m. Abt 1086)
        : (m. Abt 1086)
        :   │ + Freidrich III von Pettendorf ( - 3 Apr 1119)
        :   ├─ 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)
        :   │ + Agnes von Saarbrücken (m. Between 1131 and 1135)
        :   └─ 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)
        St. Leopold von Babenberg (1073 - 15 Nov 1136 Vienna, Austria)(m. 1106)
           ├─ Heinrich II of Austria (Abt 1107 - 13 Jan 1177) =>
           │ + Theodora Komnena (Abt 1130 - 2 Jan 1184)(m. 1149)
           ├─ Agnes of Babenberg (Between 1110 and 1111 - 25 Jan 1157) =>
           │ + Wladislaw II, King of Poland (1105 - 30 May 1159)(m. Between 1125 and 1127)
           │ + William V "il Vecchio" of Montferrat (Abt 1115 - 1191 Tyre)(m. Bef 28 Mar 1133)
            + Wladislaw II, King of Bohemia (Abt 1110 - 18 Jan 1175)(m. 1140)