Nielsen Hayden genealogy
Descendants of Siegfried of Luxembourg
920 - Abt 998 (~ 83 years)Father: Wigeric ( - Aft 19 Jan 916 bur.Hastière, Belgium)
Mother: Cunegonde (Between 885 and 895 - ??)
Siegfried of Luxembourg (Between 915 and 920 - Abt 998 bur.Saint-Maximum, Trier, Germany)
Hedwig (Between 935 and 940 - 13 Dec 992 bur.Saint-Maximum, Trier, Germany)(m. Abt 955)
   ├─ Luitgard of Luxembourg ( - Aft 1005 bur.Egmond Abbey, Bergen, North Holland)
   │ Arnulf of Ghent (951 Ghent, Flanders - 18 Sep 993 Winkel, West Friesland)(m. May 980)
   │    └─ Dirk III of Friesland (Between 981 and 989 - 27 May 1039 bur.Egmond Abbey, Bergen, North Holland)
   │     Othelindis of Nordmark ( - 31 Mar 1044 Saxony)
   │        └─ Floris I of Holland (Abt 1017 Vlaardingen, Zuid-Holland, Netherlands -
   │         28 Jun 1061 Gelderland, Netherlands) =>
   │         28 Jun 1061 Gelderland, Netherlands) =>
   │         + Gertrude of Saxony (Abt 1030 - 4 Aug 1113)(m. Abt 1050)
   ├─ Giselbert ( - Aft 18 May 1004)
   │
   │    └─ Otgiva of Luxembourg (Abt 995 - 21 Feb 1030)
   │     Baldwin IV "The Bearded" (980 - 29 May 1035 bur.Abbey of Saint-Pierre, Ghent, Flanders)(m. Abt 1005)
   │        └─ Baldwin V (Abt 1010 - 1 Sep 1067 bur.Lille, Nord, Nord-Pas-de-Calais, France) =>
   │         + St. Adele of France (Between 1010 and 1015 - 8 Jan 1079 bur.Abbey of Messines, Ypres, Flanders)
   │         (m. 1028 Paris, France)
   │         (m. 1028 Paris, France)
   └─ Frederick I of Luxembourg (965 - 6 Oct 1019)
    (Unknown daughter of Heribert I) (m. Bef 995)
       ├─ Gisela of Luxembourg ( - Aft 1058 bur.Chapel of St. Lawrence, Ghent, Flanders)
       │ Ralph de Gand ( - Between 1052 and 1056)
       │    └─ Gilbert I de Gant (Abt 1034 of Folkingham, Bourne, Lincolnshire, England -
       │     Abt 1095 bur.Bardney Abbey, Yorkshire, England) =>
       │     Abt 1095 bur.Bardney Abbey, Yorkshire, England) =>
       │     + Alice de Montfort
       ├─ Imiza of Luxembourg (Abt 1000 - Aft 2 Aug 1055)
       │ Welf II ( - 10 Mar 1030)(m. Abt 1017)
       │    └─ Kunigunde of Altdorf (Abt 1020 - Bef 31 Mar 1055) =>
       │     + Albert Azzo II (997 - 20 Aug 1097)(m. Abt 1035)
       ├─ Frederick of Luxembourg (Abt 1003 - Aft 1035)
       │ Gerberge de Boulogne ( - Aft 1059)
       │     + Walram (Abt 1030 - 1082)
       └─ Giselbert of Luxembourg (Abt 1007 - 14 Aug 1059)
       
           │ +
           ├─ Hermann of Salm, Emperor-Elect (Abt 1035 - 28 Sep 1088 Metz, Moselle, Lorraine, France) =>
           │ + Sophie
            + Clementia of Aquitaine ( - 4 Jan 1142)(m. Abt 1073)