15th century corbel carvings on the supporting arch braces of the nave roof at St Mary's. The top layer of carvings is on the south wall, the bottom on the north wall. The corbels at positions 1, 3 and 5 are lower down the nave wall. To the east (left) are two demons fiercely guarding the entrance to the chancel. The next two figures are clergy with a pair of liturgical vessels - one with a gold censer, one with an incense boat. The middle pair are musicians on shawms or recorders. Next to the musicians are angels - one holding a lute, the other angel holding a harp. "Choirs of angels" and the role of music and angel-musicians in glorifying God is an important part of early 15th century ecclesiastical iconography. Not many survived Cromwell's men. The two figures in the western corners of the nave hold shields with coats of arms, reminding the parishioners of their worldly obligations to their mortal rulers.