Creamware of these potteries would have been producing creamware. Whilst Staffordshire had taken the lead, creamware came to be developed in a number of large potting centres where stoneware was already being produced, eventually replacing stoneware entirely. These included Derbyshire, Liverpool, Yorkshire (including the Leeds pottery) and Swansea. Attribution of pieces to particular factories has always been difficult because virtually no creamware was marked prior to Josiah Wedgwood's manufacture of it in Burslem. At the time manufacturers frequently supplied wares to one another to supplement stocks and ideas were often exchanged or copied. In addition, factories usually sent out their wares
Jasperware ancient Greek vases was an important influence on Flaxman's work. These vases were first known in England from D'Hancarville's engravings, published from 1766. Inspiration for Flaxman and Wedgwood came not only from ancient ceramics, but also from cameo glass, particularly the Portland Vase which was brought to England by Sir William Hamilton by 1784. The vase was lent to Wedgwood by the third Duke of Portland from 1786. Wedgwood devoted four years of painstaking trials at duplicating the vase in black and white jasperware, which was finally completely in 1790, the figures perhaps modelled by William Hackwood. The replica was