Nielsen Hayden genealogy
Descendants of Alberade
Alberade
   └─ Emma d'Ivry, Abbess of St. Amand
    Osbern fitz Herfast ( - Abt 1040)
       └─ William fitz Osbern (Between 1025 and 1030 - 20 Feb 1071 Flanders)
        Adeliza de Tosny (Between 1030 and 1035 -
        : 5 Oct 1066 bur.Notre-Dame de Lyre Abbey, Eure, Normandy, France)
        : 5 Oct 1066 bur.Notre-Dame de Lyre Abbey, Eure, Normandy, France)
        :   │ + (Unknown mistress of William de Breteuil)
        :   │ + Adelaide of Aumale
        :    + Ralph I de Gael (Bef 1040 - Aft 1096 Palestine)(m. 1075 Exning, Cambridgeshire, England)
        + Richilde of Hainaut (Between 1015 and 1020 - 15 Mar 1086 bur.Abbey of Hasnon, Nord-Pas-de-Calais, France)
        (m. Bef 1071)
        (m. Bef 1071)