Nielsen Hayden genealogy
Family: Louis I "The Pious", Holy Roman Emperor / Judith of Altdorf (F4384)
m. Feb 819-
Father | Male
Louis I "The Pious", Holy Roman Emperor
Born Between Apr 778 and Aug 778 Chasseneuil-du-Poitou, Aquitaine, France 
Died 20 Jun 840 Petersaue, Ingelheim am Rhein, Rhineland Palatinate, Germany 
Buried Married Feb 819 [1, 2, 3] Other Spouse Ermengarde | F5048 Married Abt 794 Father Charlemagne | F2012 Group Sheet Mother Hildegarde of Vinzgouw | F2012 Group Sheet
Mother | Female
Judith of Altdorf
Born Between 800 and 805 Died 19 Apr 843 Tours, Indre-et-Loire, France 
Buried Father Welf of Altdorf | F3691 Group Sheet Mother Heilwig, Abbess of Chelles | F3691 Group Sheet
Child 1 | Female
+ Gisela of Aquitaine
Born Between 819 and 822 Died Aft 1 Jul 874 Buried Spouse St. Eberhard | F4126 Married Abt 836
Child 2 | Male
+ Charles II "The Bald", Holy Roman Emperor
Born 13 Jun 823 Frankfurt-am-Main, Germany 
Died 6 Oct 877 Brides-les-Bain, Savoi, Rhone-Alps, France 
Buried St.-Denis, Paris, France 
Spouse Ermentrude d'Orleans | F1210 Married 14 Dec 842 Spouse Richilde of Gorze | F1869 Married 12 Oct 869
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008., year only.
- [S1347] Frederick Barbarossa: The Prince and the Myth by John Freed. New Haven: Yale University Press, 2016., year only.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.