Nielsen Hayden genealogy
Descendants of Mathilde von Sachsen
979 - 1025 (46 years)Father: Otto II, Holy Roman Emperor (955 - 7 Dec 983 Rome)
Mother: Theophano (Between 955 and 956 - 15 Jun 991 Nijmegen, Netherlands)
Mathilde von Sachsen (979 - 4 Dec 1025 Echtz, Düren, Germany)
Ezzo of Lotharingia (Abt 955 - 21 May 1034)
   ├─ Richeza of Lotharingia (Abt 998 - 21 Mar 1063 Saalfield, Thuringia, Germany)
   │ Mieszko II Lambert, King Of Poland ( - May 1034)(m. 1013)
   │    ├─ Adelaide of Poland (22 Sep 1013 - Aft 1051)
   │    │ Béla I, King of Hungary (Between 1015 and 1020 - 11 Sep 1063 Kinizsa Creek, Hungary)
   │    │ (m. Between 1039 and 1043)
   │    │ (m. Between 1039 and 1043)
   │    │    │ + Synadene ( - Aft 1077)
   │    │    │ + Sophie of Looz ( - Abt 1065)(m. Abt 1062)
   │    │    ├─ St. Lászlo I, King of Hungary (27 Jun 1040 - 29 Jul 1095) =>
   │    │    │ + Adela von Rheinfelden ( - 1079)(m. 1077)
   │    │     + Ulrich von Krain (Abt 1030 - 6 Mar 1070)(m. Between 1062 and 1063)
   │    │     + Magnus of Saxony (Abt 1045 - 23 Aug 1106 bur.Artlenburg, Lower Saxony)(m. Between 1070 and 1071)
   │    ├─ Casimir I, Duke Of Poland (25 Jul 1016 Krakow, Malowpolskie, Poland -
   │    │ 28 Nov 1058 Poznan, Wielkopolskie, Poland)
   │    │ 28 Nov 1058 Poznan, Wielkopolskie, Poland)
   │    │ Maria Dobronega (Aft 1011 - 1087)(m. 1038)
   │    │    ├─ Wladyslaw I Herman, Duke of Poland (Abt 1043 - 4 Jun 1102 Plock, Mazowieckie, Poland) =>
   │    │    │ + Judith Premyslid, Princess of Bohemia ( - Between 1093 and 1095)(m. Abt 1080)
   │    │     + Vratislaus II, King of Bohemia (Abt 1035 - 14 Jan 1092)(m. 1063)
   │    └─ Gertrude-Olisava of Poland (Abt 1020 Krakow, Malowpolskie, Poland - 4 Jan 1107)
   │     Iziaslav I, Grand Prince of Kiev (1025 - 3 Oct 1078)(m. Abt 1043)
   │        ├─ Jaropolk Pjotr Isjaslawitsch (Bef 1050 - 22 Nov 1087) =>
   │        │ + Kunigunde ( - 8 Jun 1140)(m. Abt 1073)
   │        └─ Sviatopolk II, Grand Prince of Kiev (1050 - 16 Apr 1113) =>
   │         +
   └─ Liudolf (Abt 1000 - 10 Apr 1031)
    Mathilde von Zutphen
       └─ Adelheid van Zutphen
        Gottschalk (Abt 1020 - Between 1063 and 1064)
            + Judith ( - Abt 1118)