The biographical profile of her legendary husband, duke Witger of Lotharingia, is inspired on an historical figure from the 10th century, Wigeric of Lotharingia.
According to her 11th-century biography (Vita Gudilae), written by a monk of the abbey of Hautmont between 1048 and 1051, she was the daughter of a duke of Lotharingia called Witger and Amalberga of Maubeuge.
St. Amalberga of Maubeuge became a member of the community later in the eighth century.