Hugh of Châteauneuf, French bishop (born 1053)

Hugh of Châteauneuf, also called Hugh of Grenoble, was the Bishop of Grenoble from 1080 to his death. He was a partisan of the Gregorian reform and opposed to the Archbishop of Vienne, later Pope Callixtus II.

April 1 is the 91st day of the year in the Gregorian calendar; 274 days remain until the end of the year.