lead-glazed earthenware and unglazed or salt-glazed stoneware made in Staffordshire, England, from the 17th century onward. Abundance of local clays and coal gave rise to a concentration of pottery factories that made Staffordshire one of the foremost pottery centres in Europe. Porcelain was first made at Longton Hall c. 1750. Among the distinguished factories located there were Spode, Minton, Wedgwood, and New Hall.