William of Malmesbury
The 16th century antiquarian John Leland wrote that among the various saint lives at Glastonbury was a "Vita Indracti" by William of Malmesbury. William of Malmesbury, in his "De Antiquitate Glastoniensis Ecclesiae", claimed to have discussed the saint in another work. William's "Vita Indracti", though once believed to have been the "Passio", has not survived.