Nielsen Hayden genealogy
Descendants of Albert Azzo I
Abt 970 - 1029 (~ 59 years)Father: Oberto Obizzo II of Este (Abt 950 - 1014)
Mother: Railende du Como
Albert Azzo I (Abt 970 - 1029)
   └─ Albert Azzo II (997 - 20 Aug 1097)
    Kunigunde of Altdorf (Abt 1020 - Bef 31 Mar 1055)(m. Abt 1035)
       └─ Welf I of Bavaria ( - 6 Nov 1101 Paphos, Cyprus)
        Judith of Flanders (Abt 1033 - 5 Mar 1094 Weingarten Abbey, Ravensburg, Upper Swabia, Germany)(m. 1071)
           └─ Henry IX of Bavaria (1074 - 13 Dec 1126 Ravensburg, Upper Swabia, Germany) =>
            + Wulfhilde of Saxony (Abt 1075 - 29 Dec 1126 Weingarten Abbey, Ravensburg, Upper Swabia, Germany)
            (m. Abt 1100)
            (m. Abt 1100)