A few years ago, I coprresponded with a Mr Barton whose ancestors lived in Accrington and one was a Blackburn electrical engineer. I've lost his contact details. I'd like to get in touch.
If it turns out that this Thomas Barton of Blackburn is not one of your lot , I suggest that you post on the Family History forum to offer it and let me post it on a Blackburn site.
I found a Victorian business card recently for a Blackburn electrician, Thomas Barton, and sent it to Roger