Just a thought about the Kenmare pieces; It was common practise for town councils to commission china services for use at official banquets and functions, and these services would often carry the town name. If a service became too small through breakage, and replacements couldn't be sourced for whatever reason, or if the council in question wanted a more modern set then the remainder of the old service would usually be sold off to help offset the cost of the new. I'm not saying for sure that this is where yours came from but it may be an avenue worth exploring.
