Queen Hildegard of Vinzgouw She was the daughter of Gerold I Duke of Swabia, Count of Vinzgouw and Count in the Anglachau and Imma Duchess of Swabia. Granddaughter of Gerold Bishop of Mayence and Hnabi, Duke of Alamannia. Born about 757 and died in 783. Hildegard was the second wife of Charlemagne. They were married...