Helston
The town of Helston was the focal point of the manor of Helston-in-Kerrier, the most westerly of the assessionable manors of the duchy of Cornwall, and also the biggest. Before the Black Death approximately 5,000 areas were leased to the tenants of the manor, with perhaps an additional 2,500 acres held in free tenancies. But the manor contained large tracks of barren land suitable for use only as rough pasture, which would only be leased in response to an exceptional demand for foodstuffs and land, such as that created by extensive mining activity.