Nielsen Hayden genealogy
Ancestors of Eilica von Sachsen
Abt 1080 - 1142 (~ 62 years)
┌── Hermann 
( - 27 Mar 973)
( - 27 Mar 973) ┌── Bernard I (Abt 950 - 9 Feb 1011)(m. Abt 990)
(Abt 950 - 9 Feb 1011)(m. Abt 990) │ └── Oda
│
┌── Bernard II (Abt 995 - 29 Jun 1059)(m. Abt 1020)
(Abt 995 - 29 Jun 1059)(m. Abt 1020) │ │
│ │ ┌── Heinrich I "The Bald" ( - 11 May 976) =>
( - 11 May 976) => │ └── Hildegard (Between 974 and 977 - 3 Oct 1011)(m. Abt 990)
(Between 974 and 977 - 3 Oct 1011)(m. Abt 990) │ └── Hildegard von Reinhausen
│
┌── Ordulf of Saxony (Abt 1020 - 28 Mar 1072)(m. Nov 1042)
(Abt 1020 - 28 Mar 1072)(m. Nov 1042) │ │
│ │ ┌── Berthold of Schweinfurt (Abt 920 - 15 Jan 980)
(Abt 920 - 15 Jan 980) │ │ ┌── Henry of Schweinfurt (Abt 971 - 18 Sep 1017)
(Abt 971 - 18 Sep 1017) │ │ │ └── Eilika of Walbeck ( - 19 Aug 1015 Schweinfurt, Bavaria) =>
( - 19 Aug 1015 Schweinfurt, Bavaria) => │ │ │
│ └── Eilika of Schweinfurt (Abt 1004 - Aft 1055)(m. Abt 1020)
(Abt 1004 - Aft 1055)(m. Abt 1020) │ └── Gerberge (Abt 970 - Aft 1036)
(Abt 970 - Aft 1036) │
┌── Magnus of Saxony (Abt 1045 - 23 Aug 1106 bur.Artlenburg, Lower Saxony)(m. Between 1070 and 1071)
(Abt 1045 - 23 Aug 1106 bur.Artlenburg, Lower Saxony)(m. Between 1070 and 1071) │ │
│ │ ┌── Harald Grenske (Abt 952 - Abt 995)
(Abt 952 - Abt 995) │ │ ┌── St. Olaf II Haraldsson, King of Norway (Abt 995 - 31 Aug 1030 Stiklestad, Verdal, Nord-
│ │ │ Trøndelag, Norway)(m. Feb 1018)
(Abt 995 - 31 Aug 1030 Stiklestad, Verdal, Nord-│ │ │ Trøndelag, Norway)(m. Feb 1018)
│ │ │ │
│ │ │ │ ┌── Gudbrand Kula of the Upplands
│ │ │ └── Asta Gudbrandsdottir
│ │ │ └── Ulfhilde
│ │ │
│ └── Úfhildr Ólafsdóttir (Abt 1023 - 24 May 1070)(m. Nov 1042)
(Abt 1023 - 24 May 1070)(m. Nov 1042) │ │
│ │ ┌── Eric Bjornsson, King of Sweden (Sweden;Abt 935 - Abt 994)
(Sweden;Abt 935 - Abt 994) │ │ ┌── Olof Skötkonung, King of Sweden (Sweden;Abt 965 - Abt 1020)
(Sweden;Abt 965 - Abt 1020) │ │ │ └── Sigrið Storråda
│ │ │
│ └── Astrid Ólafsdóttir ( - Between 1021 and 1022)(m. Feb 1018)
( - Between 1021 and 1022)(m. Feb 1018) │ └── Ethla of Wendland
│
Eilica von Sachsen (Abt 1080 - 16 Jan 1142)
│
│ ┌── Taksony, Prince of Hungary ( - 972) =>
( - 972) => │ ┌── Mihály of Hungary (Abt 960 - ??)
(Abt 960 - ??) │ │
│ ┌── Vazul of Hungary (Abt 990 - 1037)
(Abt 990 - 1037) │ │ └── Adelajda of Poland ( - Aft 997)
( - Aft 997) │ │
│ ┌── Béla I, King of Hungary (Between 1015 and 1020 - 11 Sep 1063 Kinizsa Creek, Hungary)
(Between 1015 and 1020 - 11 Sep 1063 Kinizsa Creek, Hungary) │ │ (m. Between 1039 and 1043)
│ │
└── Sophia of Hungary (Abt 1050 - 18 Jun 1095)(m. Between 1070 and 1071)
(Abt 1050 - 18 Jun 1095)(m. Between 1070 and 1071) │
│ ┌── Mieszko I, Duke of the Polans (Abt 935 - 25 May 992)(m. 955) =>
(Abt 935 - 25 May 992)(m. 955) => │ ┌── Boleslaw I Chrobry, King of Poland (Abt 967 - 17 Jun 1025)
(Abt 967 - 17 Jun 1025) │ │ └── Dobrawa of Bohemia ( - 977)(m. 955) =>
( - 977)(m. 955) => │ │
│ ┌── Mieszko II Lambert, King Of Poland ( - May 1034)(m. 1013)
( - May 1034)(m. 1013) │ │ │
│ │ │ ┌── Dobromir, Ruler of Lusatia
│ │ └── Emnilda of Lusatia (Between 970 and 975 - Between 1013 and 1017)
(Between 970 and 975 - Between 1013 and 1017) │ │
└── Adelaide of Poland (22 Sep 1013 - Aft 1051)(m. Between 1039 and 1043)
(22 Sep 1013 - Aft 1051)(m. Between 1039 and 1043) │
│ ┌── Hermann I of Lotharingia (Abt 925 - 16 Jun 996) =>
(Abt 925 - 16 Jun 996) => │ ┌── Ezzo of Lotharingia (Abt 955 - 21 May 1034)
(Abt 955 - 21 May 1034) │ │ └── Helwig von Dillingen =>
=> │ │
└── Richeza of Lotharingia (Abt 998 - 21 Mar 1063 Saalfield, Thuringia, Germany)(m. 1013)
(Abt 998 - 21 Mar 1063 Saalfield, Thuringia, Germany)(m. 1013) │
│ ┌── Otto II, Holy Roman Emperor (955 - 7 Dec 983 Rome) =>
(955 - 7 Dec 983 Rome) => └── Mathilde von Sachsen (979 - 4 Dec 1025 Echtz, Düren, Germany)
(979 - 4 Dec 1025 Echtz, Düren, Germany) └── Theophano (Between 955 and 956 - 15 Jun 991 Nijmegen, Netherlands)
(Between 955 and 956 - 15 Jun 991 Nijmegen, Netherlands)