Michael Robinson's site isn't dated. The Danny Boy page has the hits counter dated at October 25, 2000. On the home page, it says the entire site's hits counter has been in operation since 19 Oct 97.

Melody Lane site (a beautiful, really informative site for vintage music I might add!) shows the graphic design of the site is copyrighted effective 1999. The file modification for Danny Boy is shown as 6/2/01. However, it appears as though the website owner was caught in the Sonny Bono copyright snare, so it could be that the entire site was "redone" to comply with the law. Can't really discern that from the website.

One could email both website owners and ask, of course.