Nielsen Hayden genealogy
Descendants of Otto I von Hessen
![Male](img/tng_male.gif)
Father: Heinrich I von Hessen
(24 Jun 1244 - 21 Dec 1308)
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Mother: Adelheid of Brunswick-Lüneburg
( - 12 Jun 1274)
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Otto I von Hessen (Abt 1272 - 7 Jan 1328)
           └─ Otto of Brunswick
(Abt 1340 - 13 Dec 1394 Hardegsen, Lower Saxony, Germany) =>
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            + Margareta of Jülich
(Abt 1364 - 18 Jun 1442 Hardegsen, Lower Saxony, Germany)(m. Bef 24 Jun 1379)
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