Hildegarde Holy Roman Empress UNKNOWN 
Hildegarde Holy Roman Empress was born about 0757 in Aachen, Rhineland, Prussia. She died in Thionville, Moselle, France.
They had a son named Louis I 'The Pious' Holy Roman Emperor.
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Children
Louis I 'The Pious' Holy Roman Emperor UNKNOWN
Louis I 'The Pious' Holy Roman Emperor was born in August 0778 in Casseneuil, Liege or, (Lot -et-Gronne,) France. He died in near Mainz, Ingelheim, Rhineland, Prussia.