A QUESTION FOR BRIT!SUPERNATURAL
I think it's pretty much a cert that the brothers are going to be Welsh in this form of the story. But I haven't yet decided what to call them.
When I grew up in Wales I knew people with the names Sam and Dean. But if, canonically, they're named after their grandparents, they're much more likely to have more stereotypically Welsh names - not so sure about Sam, but Dean is definitely one of the names that's only started turning up in recent generations.
The names I've chosen so far are Siôn and Dai (nickname form of Dafydd), but I'm not sure whether to go for these over Sam and Dean.
Anyway, there are still surnames to deal with!
Winchester? (Not very Welsh.) Caerwynt? (Welsh translation of the place-name Winchester; may or may not be a realistic surname.) Williams? (Plausible, but it's a common enough surname in the UK that if there was another hunter family called Williams things would get really confusing.)
And what about the parents? Unchanged? Welsh-ified? Something else entirely?
[ standpi klassicalkelt candyexorcist plus any other SPN fans who follow me ]