Both roofs have carved "canopies of honour" over their east ends – a distinctive local feature – and part of the medieval rood screen still stands in the south aisle.

Beside the altar, and perhaps two centuries older than this woodwork, lies a monument to an early 14th-century Welsh knight, David ap Madoc: it depicts his hand clutching his sword, and a cat-like lion on his flowery shield.

The most outstanding medieval survival is the mosaic of stained glass (dated 1503) in a south window, including figures of saints and the feet of Christ pierced by a huge golden nail.

According to tradition, this glass was once in the big window above the altar, and was preserved from destruction during the Civil War by being buried in the mighty iron-bound oak chest which stands below its present position.

There is more medieval glass in the window by the font, near the Elizabethan memorial to Thomas ap Rice, who died "at cock-crow" on a Sunday in 1582.