Nielsen Hayden genealogy
Family: Christian I, King of Denmark, Norway, and Sweden / Dorothea of Brandenburg (F13198)
m. 28 Oct 1449Dietrich of Oldenburg ( -1440) 
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Heilwig of Holstein (1398-1436)
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| Johann "the Alchemist" of Brandenburg (1403-1464)
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| Barbara of Saxony (1406-1465)
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| Christian I, King of Denmark, Norway, and Sweden (1426-1481)
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| Dorothea of Brandenburg (1430-1495)
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Margaret of Denmark (1456-1486)  |