What is "aldebert"

Aldebert, or Adalbert, was a preacher in 8th century Gaul. He claimed that an angel had conferred miraculous powers on him at his birth and that another had brought him relics of great sanctity from all parts of the earth. He also claimed to be able to see the future and read people's thoughts, telling those who came to him that they had no need to confess, since he knew what they had done, and that their sins were forgiven.