*Oppose The way I've become accustomed to dealing with these things is that I'll keep the article with the proper title (Dál Riata, in my experience) and just add a redirect from the common names (Dalriada in this case). It works just fine. As well, making a little note at the beginning about the various names wouldn't be a bad idea (check out Currach for an example). This said, I've not been involved in this discussion whatsoever, and I'm sure these points have been argued both for and against.