 In 858, at the coaxing of Charles the Bald, his cousin, he and his brother betrayed Louis the German when he sent them on an espionage mission and went over to Charles, who rewarded them handsomely because he had lost his Bavarian "honores".He acted as Duke of Transjurane (Upper) Burgundy from then until about 864.He married Waldrada of Worms, by whom he left a son, Rudolf, who later became King of Transjurane Burgundy, and a daughter, Adelaide of Auxerre, who married Richard, Duke of Burgundy, and had issue.