The English (and many other ) Wikipedias use "Authority Control";
identifiers like VIAF, ORCID and several others, which help us to
disambiguate people with the same name, and to be sure that the
subject is the same person as that referred to in other sources.
The main tool for doing this is the template:
https://en.wikipedia.org/wiki/Template:Authority_control
I can see no evidence that the template, or Authority Control in
general, is used on the Welsh Wikipedia (I'm not a Welsh speaker).
Have I missed somethng? If not, I'd be happy to advise on its
implementation.
--
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk