When I attended training college in Swansea during 1969-1971, there was a student who earned the nickname John-Williams-Undecided. When asked which course he was opting for ... well you don't need me to tell you what his reply was, do you? The name stuck throughout college.
In the village I grew up in, Gowerton, we had a number Joneses, Jones-Ty-Rhos and Jones-Ty-Rhiw (neighbouring cottages); Ken-Jones-the-Milk (milkman); Mrs-Jones-Gas and Mrs-Jones-Waterman (named for their husband's trades). Fond memories.
Angela Coles, Wrexham