Dear Chris
You know more about him than I do. He was my great-great grandfather on my father's side. I have him in Doncaster too, and the spouse Mary Ann, from Hull (with the same question mark).
I did a trace and found PLG born in Paris that would match. But going international is a whole load of work, and I'm too busy these days to chase it up. Something I'm keeping on the back-burner for retirement!
If you have any photos of Fanny that would be great. I have no pictures of any of the Gautiers, but our family are blessed with particularly French noses.... I'd like to see if there's a resemblance....
Thanks for being in touch. I'll set aside some time to search a bit more sometime. Do keep in touch if you find out anything more.
Kind regards
Tom