The older of the two groups was the Burgundian group. Its oldest known member was Welf, the first Count of Altdorf. He was mentioned in 819 as father of Empress Judith. The younger sons of the first count of Altdorf, Conrad and Rudolf accompanied their sister to the court of her husband, Louis the Pious, where their ambitious spirit maintained their hereditary rank, and where they shared the happy, as well as the adverse fortunes of that sister. When Judith was surprised and confined by her stepsons, her brothers were shaven as monks but claimed and obtained permission to stand beside the throne. Judith's sister Hemma (* 808 † 876) later married Judith's stepson Louis the German and became Queen of the Franks.