St. Non’s Well is also known as St. Nunne’s or St. Ninnie’s (as well as Piskie’s Well) and can be found at Hobb’s Park Farm down a flight of stone steps and at the top of a very steep field.
According to legend, the water bowl, which is still visible, was removed twice by a farmer who thought it would be of more use in his pigsty, but somehow found it's own way back on both occasions. The determined farmer tried a third time but was struck dumb, suffered a series of misfortunes and eventually went mad. An offering of pins left in the water apparently placates pixies.
For further information, please read Haunted Britain by Antony D. Hippisley Coxe.