 The Chapter of the Cathedral was composed of three dignities (the Archdeacon, the Archpriest, and the Provost) and fifteen Canons.There were also twelve chaplains.The Chapter itself was already in existence by 1076, when Bishop Deodatus gave a "mansio" in Toirano to the monastery of S. Pietro in Varatella, with the consent of the three dignities and eleven priests and deacons.