Please remember our forum rules say not to post details of living people without their consent, so I have removed the names of some people from your last two posts.
With regard to the man with the unusual first name, you don't need Ancestry to find him - his birth (1925) and marriage (1951) are on FreeBMD.
https://www.freebmd.org.uk/cgi/search.pl
I think he and his wife are still living and are in the UK.