Records of the Taxatio Ecclesiastica in 1291, show this priory had an annual income of 12 pounds 11 shillings, derived from local lands in Letheringham plus those belonging to the church in the neighbouring village of Charsfield.
By the time of the last prior, William Basse, and just before the Priory's suppression as part of the Dissolution of the Monasteries, the yearly income was valued at 26 pounds 18 shillings and 5 pence.
However, the churchwardens arranged only for the nave to be restored, having its east end closed up (thus creating substantially the church that exists today).
The records of these visits, including within them a number of drawings, give a clear indication of the impressive monuments in "stone, brass and glass" largely relating to the Bovile, Wingfield and Naunton families.
Thomas Martin, who visited twice in 1723 and 1744, states "I have neither seen, nor Read of any place (except Westminster Abbey) so fully adorn'd with such Noble Remains of Antiquity".