https://en.wikipedia.org/wiki/Judith_of_Bavaria_

Queen Judith , also known as Judith of Bavaria, was the daughter of Count Welf and Saxon noblewoman, Hedwig, Duchess of Bavaria . She was the second wife of King Louis the Pious, which brought her the title of Empress of the Franks. Marriage to Louis marked the beginning of her rise as an influential figure in the Carolingian court. She had two children with Louis, a daughter Gisela and a son, Charles the Bald. The birth of her son led to a major dispute over the imperial succession, and tensions between her and Charles' half-brothers from Louis' first marriage. She would eventually fall from grace when Charles' wife, the new empress Ermentrude of Orléans, rose to power. She was buried in 846 in Tours.