Nielsen Hayden genealogy
Descendants of Adelheid
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Adelheid
               └─ Irmgard von Oettingen
(Abt 1304 - 6 Nov 1399 Liebenau, near Worms, Germany)
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Adolf
(27 Sep 1300 - 29 Jan 1327)(m. Aug 1320)
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                   └─ Ruprecht II
(12 May 1325 - 6 Jan 1398)
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Beatrix of Sicily-Aragón
(1326 - 12 Oct 1365)(m. 1345)
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                       └─ Anna of Rhein
(1346 - 30 Nov 1415)
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Wilhelm II-VII of Jülich
(Abt 1348 - 25 Jun 1408)(m. 1363)
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                           └─ Margareta of Jülich
(Abt 1364 -
                            18 Jun 1442 Hardegsen, Lower Saxony, Germany)
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                            18 Jun 1442 Hardegsen, Lower Saxony, Germany)
                           
Otto of Brunswick
(Abt 1340 - 13 Dec 1394 Hardegsen, Lower Saxony, Germany)
                            (m. Bef 24 Jun 1379)
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                            (m. Bef 24 Jun 1379)
                               └─ Elizabeth of Brunswick-Göttingen
( - Aft 29 Sep 1444)
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Erich of Brunswick
( - 28 May 1427 bur.St. Alexander, Einbeck, Lower
                                Saxony, germany)(m. Between 1 Jul 1405 and 14 Jul 1405)
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                                Saxony, germany)(m. Between 1 Jul 1405 and 14 Jul 1405)
                                   └─ Anna of Brunswick-Grubenhagen
(Abt 1420 -
                                    9 Oct 1474 Nannhofen, Bavaria, Germany)
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                                    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)
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                                    29 Feb 1460)(m. 22 Jan 1437 Munich, Bavaria, Germany)