The partial removal of the whitewash of the chapel walls, in 1858, led to several discoveries of the former arrangements of the building, and of the coloured decorations of the walls; and, were it desirable, a complete restoration of the interior to its former state would not be difficult.
There were two altars in the chapel—one at the east end, as usual, and one under the east window of the south aisle. This latter was, no doubt, a chantry. The stone slabs which formed the tops of the altars still exist, and are raised, to the extent of their thickness, above the floor: the east altar-stone is 8 feet by 3 feet, and is 8 inches thick, the edge being a fillet of 3 inches, and a chamfer; the surface is so decayed that only one of its original five crosses pattée now remains.
The altar-stone of the south aisle is 5 feet 6 inches by 2 feet 6 inches, the edge showing a fillet and chamfer. The five crosses pattée on it are still perfect. The piscina in the chancel still remains, recessed in a fenestella.
The sill of the south window, near the altar, is low, so as to form a sedilia bench. In the middle of the sloping sill of the east window a step has been cut, no doubt for the crucifix to stand on; and on each side of it is a similar step, probably for candlesticks. On the east wall, on each side of the window, is a stone bracket, probably to support an image.
On the east wall of the south aisle there is a bracket with a grotesque head, which was probably intended to support a figure. There are signs of a large bracket having existed on the north side of the altar; and the base-mould of a small column, which possibly supported its front edge, may be seen on a block of stone rising above the pavement.
A very remarkable squint was discovered and reopened in 1859 in the south-west angle of the chancel, through which a view of the priest officiating at the chantry altar could be obtained from the rood-loft above.
In the wall, opposite to this squint, is a doorway, which gave passage from the bell-turret to the rood-loft. The sill of this doorway is 13 feet 9 inches above the chapel floor. The bell itself is now (1871) in use at the new church at Rowsley. It had been taken down from the turret many years ago.
Two fragments of the open-work of the rood-screen may be seen in the west ends of the chancel pews. They are carved in oak.
The font, which is round and perfectly plain, is of the Norman period, and probably of the same date as the early part of the chapel. It is not in its original position. The stoup for holy water is near the entrance door of the chapel.