The church, in addition to chantry foundations, contained valuable relics, among which were portions of the bodies of the patron saints of the church, St. Wulfran, Archbishop of Sens, missionary to Friesland, and monk of Fontenelle,[75] and of St. Symphorian, the martyr of Autun. It is highly probable that, as time went on, these relics were preserved in the eastern crypt; the beautiful staircase, with its elaborate doorway, by which this crypt in the fifteenth century was connected with the chancel, had evidently some special purpose. But it is almost certain that, on such days as the 15th of October, the feast of the translation of St. Wulfran, when people flocked into the town for what is now known as the Onion Fair, the relics would be exhibited to the devout visitors from the chamber above the north porch, through the small traceried window above the north door. This chamber was approached by staircases in the outer pinnacles of the north porch. Its construction seems to have been the _raison d’être_ of the rebuilding of which we have spoken; the whole lower storey, the inner porch, the open way in the middle, left to give room to church processions, the outer porch, were vaulted over, and, to admit of this vaulting, the pediment of the north doorway was ruthlessly mutilated. Those who have discovered in this upper chamber the vicarage of North Grantham will find in it rather a chapel where the relics belonging to the church were kept and exposed to the faithful, and in the two staircases (an expensive provision for so small a vicarage) a way of entrance and of exit for those who wished to visit the shrine and seek contact with its treasure.[76] The floor and the vaulting beneath it have now been removed, and the destruction which it caused to the north doorway is only too clearly visible. The date of the chamber above the south porch, in its present state, is rather uncertain; the little window looking into the church, which points to its use as a watching-chamber, is of the fifteenth century.