Sheffield is a town in Berkshire County, Massachusetts, United States. It is part of the Pittsfield, Massachusetts Metropolitan Statistical Area. Sheffield is home to Berkshire School, a private preparatory school. The former resort town includes the village of Ashley Falls, and is bordered by various other towns and villages, such as Egremont. Originally called Outhotonnook, meaning "over the mountain," the land was purchased on April 25, 1724 from Chief Konkapot and 20 other Stockbridge Mahican Indians. Its price was 460 pounds, 3 barrels of cider and 30 quarts of rum. The lower township of Housatonic (as Outhotonnook would be corrupted) was first settled by Matthew Noble of Westfield, who arrived in 1725.