Every other source had this marked as a 2012 release, and there were an equal number of links of the various interested parties (actors, director, production company, etc) that listed this as 2012 movie or had a wikilink to 2012 which redirected to 2011 before I moved the page to 2012 the first time. Also, take note that the WP:FILMRELEASE states "film's earliest release" or "release date of country that produced the film", it gives no guidelines for which one takes precendent. I would err on the side of 2012 for now, because it just officially got moved from October 2011 to March 2012 on Septermber 9 (date of the source referenced) so the fact that maybe the Irish sources have not yet been updated is a possibility.