Kim I have heard this recording numerous times on A Celtic Sojourn with Brian O'Donovan. This would seem to be the answer...

Fiona Ritchie is not exactly know for her clarity of diction, IMHO. Her accent has always sounded like an odd amalgam of Cockney, Irish and Scottish to me, almost fake, if you will...I have thought this for years...so I would not be too concerned if she mispronounced this name...

Mairead Ni Dhomnaill has also performed with the Donal Lunny Band (not sure if there is a recording though).

Maura O'Connell; that is the correct name...