Nielsen Hayden genealogy
Descendants of (Unknown brother of Chrodegang, bishop of Metz)
Father: Sigram
Mother: Landrada
(Unknown brother of Chrodegang, bishop of Metz)
   └─ Ingram I
   
       └─ Ermengarde ( - 3 Oct 818)
        Louis I "The Pious", Holy Roman Emperor (Between Apr 778 and Aug 778 Chasseneuil-du-Poitou, Aquitaine,
        France - 20 Jun 840 Petersaue, Ingelheim am Rhein, Rhineland Palatinate, Germany)(m. Abt 794)
        France - 20 Jun 840 Petersaue, Ingelheim am Rhein, Rhineland Palatinate, Germany)(m. Abt 794)
           ├─ Lothair I, Emperor of the Romans (795 - 28 Sep 855 Prum Abbey, Trier, Germany) =>
           │ + Ermengarde de Tours ( - 20 Mar 851)(m. Oct 821)
           └─ Louis "the German", King of Bavaria (Abt 806 - 28 Aug 876 Frankfurt-am-Main, Germany) =>
            + Emma of Altdorf (Abt 808 - 31 Jan 876)(m. 827)