Pro Hart was the first guy on the CV Jones Gallery page I linked, but David Bromley (the artists change as you scroll down the gallery page) is the guy that did the painting I provided a link to - which is clearly (to me) essentially a copy in a different style of the older (at a guess, by style) painting your customer has a print of - which I was never able to track down.
I don't know if you did some additional research and connected to Pro Hart as doing the original painting in question, but based on what I could find and posted here, I don't think so.
The similarlity of many details in the paintings leads me to the conclusion that Mr. Bromley was probably working from it as his inspiration, but clearly the print is not of his painting, as there are significant differences in the entire style and colors.
Unfortunately the title comes up with LOTS of other art...