Nielsen Hayden genealogy
Descendants of Judith von Schwalenberg
Father: Wittekind
Judith von Schwalenberg
   └─ Albrecht of Everstein ( - Aft 1197)
    Richeza of Poland (Abt 1135 - 16 Oct 1185)(m. Aft 1166)
       └─ Albrecht of Everstein
        Agnes of Bavaria
            + Hedvig Jensdatter ( - 6 Jun 1266)