painted periwinkles", is actually a pattern called "Braganza"  and was manufactured by The Colclough China Company. The Colclough  China Company was founded in 1890 and was taken over by Royal  Doulton in the early 1970s (so Hyacinth is only stretching the truth  a bit). The Braganza pattern was discontinued in 1992, and  production under the Colclough name was discontinued in 1996.