As far as I can tell, Mairéad Carlin never puts an accent over the first "a" in her name. I checked her
Twitter account and various official documents from Celtic Woman.
Reading
Tom's new Wikipedia article on Ancient Land reminded me of this. The Wikipedia article entitled
Máiréad Carlin, should probably be renamed, and references to her in related articles should be fixed, no?
Máiréad Nesbitt, on the other hand, does use an accent on that letter, so it's easy to see how people might make that mistake.
P.S. Thanks again to Glen for switching the forum over to UTF-8 so we can talk about these special characters! 🎉