 By 1806, Napoleon had invaded the Kingdom of Naples and the Bourbons fled to Sicily, protected by the British Navy; production was discontinued at the factory.Naples porcelain had the usual mark of a crown over a blue "N", though this mark has been, and continues to be, used by many imitations of greatly varying quality.Following a trend in the later years of the Naples porcelain factory, after it closed, Neapolitan potteries continued to make creamware, fine glazed earthenware, similar to English Wedgwood.