According to the Liberian catalogue, Caius became bishop on the 17th of December, 283, and held office for twelve years four months and six (or seven) days, i.e. until April 22, 296, and these dates are accepted by Lipsius as correct. Both versions of the Chron. agree with the History in assigning fifteen years to Caius’ episcopate, but this error is of a piece with the others which abound in this period. The report of his martyrdom is fabulous.