Maria Doyle Kennedy music

I would like to know how popular Maria Doyle Kennedy's music is in Ireland. She is supposed to be a well known singer from Dublin and she has several cds on her website and on amazon. She is also a talented actress and portrayed Catherine of Aragon in a showtime series, The Tudors, starring Jonathan Rhys Meyers who is also from Ireland.

Also Maria Doyle Kennedy's husband, Kieran Kennedy is also a musician and has had several cds.