The cathedral was said to have been burnt to the ground in 1402 during the rebellion of Owain Glyndŵr, but there is no contemporary evidence for this, though it may well have been damaged. There certainly was extensive reconstruction from the end of the 15th century, completed in 1532. There is a Latin inscription over the tower doorway recording that Bishop Skevington built the tower in 1532, though it was not complete when Skevington died in 1533. Some work was done during the 18th century and £2,000 was spent on repairs in 1824, followed by the altering and refitting of the interior in 1825 at a cost of a further £3,252.