Nielsen Hayden genealogy
Frederick Barbarossa: The Prince and the Myth by John Freed. New Haven: Yale University Press, 2016.
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Title Frederick Barbarossa: The Prince and the Myth by John Freed. New Haven: Yale University Press, 2016. Source ID S1347 Linked to (22) Albert Azzo II
Baldwin IV "The Bearded"
Conrad I
Louis "the German", King of Bavaria
Rudolf II
Welf II
Frederick Barbarossa, Holy Roman Emperor
Tostig Godwinson
Emma of Altdorf
Kunigunde of Altdorf
Welf of Altdorf
Henry IX of Bavaria
Judith of Bavaria
Welf I of Bavaria
Judith of Flanders
Sophia of Hungary
Magnus of Saxony
Wulfhilde of Saxony
Frederick II von Hohenstaufen
Family: Henry IX of Bavaria / Wulfhilde of Saxony
Family: Louis "the German", King of Bavaria / Emma of Altdorf
Family: Louis I "The Pious", Holy Roman Emperor / Judith of Altdorf