This 14th Century chantry chapel was originally used to offer prayers and celebrate masses for the souls of the dead, in order to speed them through Purgatory to Heaven. After the Reformation, the building was used as a Grammar School and later as a School for Girls. It fell into disrepair in the mid-19th century. The chapel retains a fine 14th Century decorated window. It is built over a crypt which may have been a Charnel House (a vault where corpses or bones are stored).