Overview
Hedwig also Heilwig, ( – ) was a Saxon noblewoman, abbess of Chelles, the wife of Count Welf, and mother-in-law of Emperor Louis the Pious through his marriage to Judith, her daughter.
Life
Hedwig was possibly born at Altdorf in the Frankish lands of Alamannia (present-day Germany). According to Bishop Thegan of Trier, she was a member of the Ecbertiner family, a powerful Franco-Saxon Family. She was the daughter of Count Isambart and Thiedrada.
Upon her daughter's marriage to Louis the Pious, the family began benefiting from royal patronage, with the family possessing the previously royal estate of Schussengau in 819.
In 827, Hedwig's other daughter Hemma married Louis the German, making Hedwig mother-in-law to both Emperor Louis and his Son.
From Wikipedia (CC BY-SA 4.0).