Who is the wife of Charlemagne who is a step mother to Pepin the Hunchback?
Pepin the Hunchback: Pepin, or Pippin, the Hunchback (French: Pépin le Bossu, German: Pippin der Buckelige; c. 769 – 811) was the eldest son of Charlemagne. Pepin the Hunchback:  He lived with his father's court even after Charlemagne dismissed his mother and took another wife, Hildegard. Hildegard of the Vinzgau: Hildegard (ca. 754 – 30 April 783 at Thionville, Moselle), was the second wife of Charlemagne and mother of Louis the Pious.
Hildegard