St Mary's Priory, Mendham was a Cluniac priory located on the River Waveney, the border of Norfolk and Suffolk.
All of it that remains in the 21st century is a single piece of masonry alongside a pile of rubble.
[1] The Priory was founded by William de Huntingfield who gave the isle of St. Mary of Mendham to the monks of Castle Acre Priory.
[2]