The chapter-house was decorated with frescoes and stained glass by Dean Heywood in the fifteenth century, as we know from the MSS. entitled _Cantaria Sancti Blasii_ in the library. The frescoes have disappeared except over the doorway, where still remain faint signs of the representation of the Assumption, which may have formed part of Dean Heywood's decoration, but more likely is earlier: it has been suggested that it was placed there by Bishop Burghill from the fact that a Dominican Friar, to which order he belonged, is represented in the group in adoration. The glass contained figures of the apostles, with other pictures above; these being all pre-Cromwellian, have, of course, disappeared. More recently the glazing of the chapter-house displayed armorial bearings, more or less correct, in imitation of glass known to have ornamented the cathedral in the past. This armorial glass is gradually giving way to glass representing scenes in the history of the cathedral. At present, five of the windows have been so glazed, and the rest will be changed gradually, as opportunity offers. The first window on the left-hand side on entering is in memory of Prebendary Edwards. There are figures of St. Chad and King Wulphere, with scenes showing the Consecration of St. Chad, and the Baptism by St. Chad of the two sons of King Wulphere. The second window is in memory of Archdeacon Allen and Prebendary de Bunsen. The figures are St. Oswald and St. Aidan. The scenes represent St. Aidan preaching to the Northumbrians, with King Oswald interpreting; and St. Aidan at Lindisfarne, teaching in his school, where St. Chad is one of the scholars. The third window is in memory of Dean Bickersteth. The figures are Archbishop Theodore and St. Ovin, and the scenes St. Chad teaching his clergy, and St. Ovin listening to the angels who were calling St. Chad at his death. The fourth window is in memory of Prebendary Gresley. The figures are Oswy, King of Northumbria, and Diuma, the first bishop of Mercia. The scenes are Bishop Jaruman promising to build a church at Lichfield, and the institution by King Æthelwald of prebendaries. The fifth window is in memory of Prebendary Finch Smith. The figures represent Archbishop Higbert of Lichfield, and Thomas Cantelupe, Bishop of Hereford, formerly prebendary of this cathedral. The scenes are Bishop Aldulf at the Council of Cloveshoo, renouncing the metropolitan powers in favour of Canterbury, and Bishop Roger de Clinton building a new cathedral in honour of St. Mary and St. Chad.