Hi,
First and foremost, thanks to everyone who has contributed to the search for this house. It is appreciated and all comments will be passed onto the researcher.
Based on what I've seen, I personally don't think it is the Old Packet House at Worsley. I can't reconcile modern views of the property to the 1856 painting.
During the last week, more than 450 helpful people on the Shropshire, Cheshire and Lancashire lists have viewed the painting. Thank you. I still feel confident that the house will be identified. Somebody, somewhere, has the answer.
Gwynne.