Once again I turn to my readers having drawn a blank on this.
The millstone is on Eston Recreation Ground, but I cannot find any link between the area and a mill and my internet searches have drawn a blank on when and why it was placed.
Any ideas ?
The only thing of note on old maps appear to be a Fever Hospital on the opposite side of the road.
UPDATE : The mystery has been solved by Cllr Sheelagh Clarke.
The millstone was purchased from the stone merchant attached to the kennels in Guisborough as part of the landscaping of the Church Lane Pocket Park. It was placed there purely as a decorative item to enhance the landscaped areas rather than representing something specific.