Hildegarde von SWABIA 
Hildegarde von was born in 0758 in Aachen, Rheinland, Prussia. Hildegarde von's father was Gerold I Duke of SWABIA and her mother was Emma de ALEMANIA. Her paternal grandfather was Gerold du MAYENNE; her maternal grandparents were Hnabi (Nebi) Duke of ALEMANIA and Hersuinda UNKNOWN. She was an only child. She died in Thionville, Moselle, France.
They had a son named Louis I 'The Pious' Holy Roman.
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Children
Louis I 'The Pious' Holy Roman Emperor
Louis I 'The Pious' Holy Roman was born in August 0778 in casseneuil, Lot-et-garonne near Poitiers, Aquitaine, France. He died in petersaue, Ingelheim am Rhein, Rheinladn-Palatinate, Germany.