The central pillar is octagonal, and consists of alternate rounds and hollows, the former having distinct bases and foliaged caps, and each of the hollows having a shield with armorial bearings inserted in the cavetto between the caps of the shafts. The shields on the capital of the central pillar of the chapter house are as follow:-- 1. On the south side facing the entrance doorway, a shield with the royal arms. 2. On the north side, immediately opposite the 1st, a sculptured figure of St. Andrew (see Fig. 553). 3 and 4. On each of the east and west sides, a shield having arms quartered thereon, viz.:--1st and 4th, a lymphad; and 2nd and 3rd, a fesse chequé, being the arms of Stewart of Lorn or Innermeth[52] reversed--_i.e._, the 1st and 4th quarters should occupy the position of the 2nd and 3rd, and _vice versa_ (a mistake not unusual in Scottish heraldry). 5, 6, 7, and 8 occupy the diagonal faces of the octagon, and have shields bearing the cross, crown of thorns, hands and feet, spear, and other emblems of the Passion. The above heraldic blazons are of some importance, as they enable us to fix approximately the name and date of the bishop under whom the restoration of the chapter house was carried out. The royal arms occupy, as is natural, the most prominent position. The east and west sides both bear the same arms, and are, doubtless, those of the bishop who presided at the time of the restoration. There were several bishops of the name of Stewart during the fifteenth century, when the author of the restoration would naturally be looked for. These were James Stewart (1459), David Stewart (1462), and Andrew Stewart, who was elect of Moray in 1482. These bishops all belonged to branches of the family of Lorn. Bishop James Stewart lived for only two years. Bishop David Stewart was brother of the last bishop, and was parson of Spynie. “He built the great tower of Spynie Castle[53] (the Bishop’s Seat), a mighty strong house; it is called to this day David’s Tower.”[54] “This good prelate made several wise regulations; and after he had governed the see of Moray fourteen years, he died, and was buried in the same aisle with his brother,”[55] viz., that of St. Peter and St. Paul on the north side of the cathedral.