 The account of his life, written by his disciple Albert, who lived with him during his last year at Maleval, has been lost.Written accounts of his life by Theodobald, or Thibault, given by the Bollandists, is unreliable because it has been interpolated with the lives of at least two other Williams.After a number of chapters in which he is confused with St. William of Gellone, Duke of Aquitaine, we are told that he went to Rome, where he had an interview with pope Eugene III, who ordered him to make a pilgrimage to Jerusalem in penance for his sins.