Nielsen Hayden genealogy
Descendants of Baldwin II "The Bald"
Abt 864 - 917 (~ 53 years)Father: Baldwin I "Iron-Arm" ( - 879 Arras, Pas-de-Calais, France)
Mother: Judith of France (Abt 844 - Aft 870)
Baldwin II "The Bald" (Abt 864 - 917 bur.Abbey of Saint-Pierre, Ghent, Flanders)
Ælfthryth of Wessex (Abt 870 - 7 Jun 929 bur.Abbey of Saint-Pierre, Ghent, Flanders)(m. 884)
   ├─ Adalulf ( - 933)
   │
   │    └─ Arnulf I ( - 971)
   │    
   │         + (Unknown daughter of the castellan of Lens)
   └─ Arnulf I "The Great" (Abt 885 - 964 bur.Abbey of Saint-Pierre, Ghent, Flanders)
    Adèle de Vermandois (Between 910 and 915 - 958 bur.Abbey of Saint-Pierre, Ghent, Flanders)(m. 922)
       ├─ Hildegard of Flanders ( - 990)
       │ Dirk II ( - 6 May 988)
       │    └─ Arnulf of Ghent (951 Ghent, Flanders - 18 Sep 993 Winkel, West Friesland) =>
       │     + Luitgard of Luxembourg ( - Aft 1005 bur.Egmond Abbey, Bergen, North Holland)(m. May 980)
       └─ Baldwin III (Abt 940 - 961 bur.Abbey of Saint-Bertin, Saint-Omer, Pas-de-Calais, France)
        Mathilde of Saxony ( - 25 May 1009)(m. 961)
           └─ Arnulf II "The Young" ( - 30 Mar 987 bur.Abbey of Saint-Pierre, Ghent, Flanders) =>
            + Rozala of Italy, Queen Consort of France (Between 945 and 955 -
            13 Dec 1003 bur.Abbey of Saint-Pierre, Ghent, Flanders)(m. 968)
            13 Dec 1003 bur.Abbey of Saint-Pierre, Ghent, Flanders)(m. 968)