On October 19, 1073, he became bishop of Die, Drôme and on March 9, 1074, received his episcopal consecration in Rome from the hands of Pope Gregory VII.
Hugh was transferred to the metropolitan office of Archbishop of Lyon from 1081 to 1106 and was a strong supporter of the Gregorian reform and a papal legate.
[4] Victor's successor Pope Urban II revoked the provision and reinstated him in his offices, making him legate again in 1094.
[4] Hugh presided over a synod in Autun that issued measures against nicolaism, simony and Philip I of France's bigamous marriage.
[5] By the summer of 1100 Hugh had convened a synod at Anse, consisting of four archbishops and nine bishops, that circulated Pope Paschal II's crusading decree.