Nielsen Hayden genealogy
Descendants of Hicha of Swabia
Father: Burchard II (Abt 883 - 29 Apr 926 Novara, Italy)
Mother: Regilinde of Zurich (Between 885 and 890 - Aft 29 Apr 958 Ufenau Island, Lake Zürich, Switzerland)
Hicha of Swabia
Werner V (Abt 899 - Abt 920)
   └─ Conrad the Red ( - 10 Aug 955)
    Luitgarde (Abt 931 - 18 Nov 953)(m. 947)
       └─ Otto of Worms (Abt 947 - 4 Nov 1004)
        Judith ( - 991)
           ├─ Pope Gregory V ( - 18 Feb 999 Rome)
           └─ Henry of Speyer (Abt 968 - 989 bur.Worms Cathedral, Worms, Germany) =>
            + Adelaide of Alsace