Nielsen Hayden genealogy
Descendants of (Unknown) de Vermandois
Father: Heribert I ( - Between 900 and 907)
Mother: (Unknown wife of Heribert I)
(Unknown) de Vermandois
Gebhard ( - Aft 15 Jan 947)
   └─ Konrad ( - Abt 982)
   
       ├─ Judith ( - Abt 16 Oct 973)
       │ Heinrich I "The Bald" ( - 11 May 976)
       │     + Adela von Alsleben
       └─ Konrad of Swabia and Oenningen (Abt 920 - 20 Aug 997)
        Reginlint
           │ + Friedrich I of Diessen ( - Aft 1003)
            + Adalbert ( - 1033)