I just stumbled across this little story which I'd saved on my computer, can't remember where I got it from but I must have thought it was interesting enough to have kept it. Hope you enjoy reading it as much as I did.
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Welsh Names

A 1949 English movie, "A Run for Your Money", about a pair of Welsh coal
miners who win a trip to London to see a Wales vs. England rugby match,
includes a comic scene in which a railway station master pages one of the
heroes on the public address system, calling "Mr. David Jones from Wales,
please come to the station master's office." At least a hundred arriving
passengers (except our hero) all swarm into the station master's office.
This comedic situation was possible because of the many duplicate names to be
found among the Welsh, a common source of confusion in researching Welsh
lineage. In addition, variant spellings, pseudonyms and other naming
practices are traps for the unwary.