Nielsen Hayden genealogy
Descendants of Lambert I "The Bearded"
Abt 950 - 1015 (~ 65 years)Father: Reginar III "Longneck" (920 Hainault, Belgium - 973 Bohemia)
Mother: Adela ( - 961)
Lambert I "The Bearded" (Abt 950 - 12 Oct 1015)
Gerberga of Lorraine ( - Aft 1017)(m. Between 985 and 990)
   ├─ Lambert II (Abt 991 of Louvain, Brabant, Belgium - Aft 21 Sep 1062)
   │ Uda of Lorraine
   │    ├─ Adela de Louvain ( - 1083)
   │    │ Otto (Abt 1005 - 1067)
   │    │    │ + Adalbert von Ballenstedt (Abt 1030 - Abt 1080)
   │    │     + Kuno von Beichlingen ( - 1103)
   │    │     + Jaropolk Pjotr Isjaslawitsch (Bef 1050 - 22 Nov 1087)(m. Abt 1073)
   │    └─ Henry II of Louvain (Abt 1021 - Abt 1078 bur.Abbey of Nivelles, Brabant)
   │     Adelheid ( - Aft 1086)
   │        ├─ Henry III of Louvain ( - 1095 Tournai, Hainaut, Belgium) =>
   │        │ + Gertrude of Flanders (Abt 1070 - 1117)(m. Abt 1090)
   │        ├─ Ida of Louvain (of Louvain, Brabant, Belgium - 1139) =>
   │        │ + Baldwin II De Hainaut (1056 - 1098 Anatolia)(m. 1084)
   │        │ + Arnold I van Aarschot ( - Aft 1135)
   │        └─ Godfrey I of Brabant (Abt 1060 Louvain, Brabant, Belgium - 25 Jan 1139 Jerusalem) =>
   │         + (Unknown mistress of Godfrey of Brabant)
   │         + Ida of Chiny and Namur (Abt 1083 - Between 1117 and 1122)(m. Abt 1100)
   │         + Clementia of Burgundy (Abt 1078 - Abt 1133)(m. Aft 1119)
   └─ Mathilde of Louvain (Abt 993 - ??)
    Eustace I (Abt 995 - Abt 1049)
       ├─ Eustache II of Boulogne ( - Abt 1080)
       │ + Godgifu of England (Abt 1010 - Bef 1049)
       │ (Unknown mistress of Eustache II of Boulogne)
       │ :    + Beatrice de Mandeville (of Rycote, Oxfordshire, England - ??)(m. Bef 1084)
       │ St. Ida of Verdun (Abt 1040 - 13 Aug 1113)(m. Bef 1054)
       │     + Mary of Scotland ( - 18 Apr 1118)
       ├─ Lambert II of Boulogne ( - 1054 Phalempin, Nord, France)
       │ Alice of Normandy (Abt 1030 - Bef 1090)(m. 1054)
       │     + Waltheof (1027 of Potton, Bedfordshire, England - 31 May 1076 Winchester, Hampshire, England)
       │     (m. Aft Jan 1070)
       │     (m. Aft Jan 1070)
       └─ Gerberge de Boulogne ( - Aft 1059)
        Frederick of Luxembourg (Abt 1003 - Aft 1035)
            + Walram (Abt 1030 - 1082)