Nielsen Hayden genealogy
Descendants of Heinrich I of Blankenburg and Regenstein
Father: Siegfried I of Blankenburg
Heinrich I of Blankenburg and Regenstein
   └─ Ulrich I von Regenstein ( - Between 24 Jun 1265 and 5 Jun 1267)
    Mathilde (m. Bef 1236)
       └─ Mechtild von Regenstein
        Heinrich II of Honstein ( - 24 Jan 1284)(m. Bef 1253)
           └─ Dietrich II of Honstein ( - Between 28 May 1309 and 11 Aug 1309) =>
            + Sophie of Anhalt ( - Aft 20 May 1322)(m. Bef 28 Nov 1282)