Nielsen Hayden genealogy
Descendants of Bernhard IV
- Abt 1275Father: Bernhard III (Abt 1194 - Aft 23 Feb 1265)
Mother: Sophie von Arnsberg ( - Bef 1248)
Bernhard IV ( - Abt May 1275)
Agnes von Kleve ( - Bef 1 Aug 1285)
   └─ Simon I (Abt 1261 - 10 Aug 1344)
    Adelheid von Waldeck ( - Between 17 Aug 1338 and 5 Aug 1342)(m. Bef Aug 1282)
       └─ Adelheid zur Lippe ( - Aft 1324)
        Hermann II of Everstein ( - Between 20 Jun 1350 and 12 Jun 1351)
           └─ Adelheid of Everstein ( - Aft 1376)
            Ernst of Brunswick (Abt 1297 - 11 Mar 1361)(m. Abt 1335)
               └─ Albrecht I of Brunswick (Abt 1339 -
                Between 11 Aug 1383 and 22 Sep 1383 Salzderhelden, Lower Saxony, Germany)
                Between 11 Aug 1383 and 22 Sep 1383 Salzderhelden, Lower Saxony, Germany)
                Agnes of Brunswick-Lüneburg ( - 21 Mar 1410)(m. Bef 17 Aug 1372)
                   └─ Erich of Brunswick ( - 28 May 1427 bur.St. Alexander, Einbeck, Lower Saxony, germany)
                    Elizabeth of Brunswick-Göttingen ( - Aft 29 Sep 1444)
                    (m. Between 1 Jul 1405 and 14 Jul 1405)
                    (m. Between 1 Jul 1405 and 14 Jul 1405)
                       └─ Anna of Brunswick-Grubenhagen (Abt 1420 -
                        9 Oct 1474 Nannhofen, Bavaria, Germany)
                        9 Oct 1474 Nannhofen, Bavaria, Germany)
                        + Albrecht III of Bavaria (Munich, Bavaria, Germany;27 Mar 1401 - 29 Feb 1460)
                        (m. 22 Jan 1437 Munich, Bavaria, Germany)
                        (m. 22 Jan 1437 Munich, Bavaria, Germany)