This is a long shot, but I'm looking for people with the rare surname Waterworth that have done Y-DNA tests.
I'm R-L21 and my subclade is R-FGC13017.
The oldest Waterworth I've been able to find is John le Waterward living in Rufford, Lancashire in the year 1332. I suspect it's a surviving Brittonic lineage, but you never know with R-L21, it could be Hiberno-Norse, Norman, or something else.
