1906 Wales v Ireland
you mean this one? http://www.youtube.com/watch?v=6pWo7iy-FxE
I also found these ones, probably the oldest football film, dated 1897! I advise you to switch off the volume.
By coincident I discovered moving pictures from the 28-04-1912 Netherlands - Belgium match http://www.filminnederland.nl/film/voetbalwedstrijd-te-dordrecht which is remarkable. It has always been supposed the 07-05-1922 Netherlands - Belgium match was the very first international match of Dutch NT which has been filmed.