Nielsen Hayden genealogy
Descendants of Conrad II "The Salic", Holy Roman Emperor
- 1039Father: Henry of Speyer (Abt 968 - 989 bur.Worms Cathedral, Worms, Germany)
Mother: Adelaide of Alsace
Conrad II "The Salic", Holy Roman Emperor ( - 4 Jun 1039 Utrecht, Netherlands)
Gisele of Swabia (11 Nov 995 - 14 Feb 1043 Goslar, Lower Saxony, Germany)(m. Bef Feb 1016)
   └─ Heinrich III, Holy Roman Emperor (28 Oct 1016 - 5 Oct 1056 Bodfeld, Harz, Germany)
    + Gunhilda of Denmark (Abt 1020 - 18 Jul 1038 bur.Limburg Abbey, Bad Dürkheim, Rhineland-Palatinate, Germany)
    : (m. 1036 Nijmegen, Netherlands)
    : (m. 1036 Nijmegen, Netherlands)
    Agnes of Poitou (Abt 1025 - 14 Dec 1077 Rome)(m. 21 Nov 1043)
       ├─ Mathilde (1045 - 12 May 1060)
       │ Rudolf von Rheinfelden (Abt 1025 - 15 Oct 1080 Merseburg, Saxony)
       │     + Berchtold II of Swabia and Zähringen (Abt 1036 - 12 Apr 1111)
       └─ Heinrich IV, Holy Roman Emperor (11 Nov 1050 Goslar, Lower Saxony, Germany -
        7 Aug 1106 Liège, Belgium)
        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)
            + St. Leopold von Babenberg (1073 - 15 Nov 1136 Vienna, Austria)(m. 1106)