Here is a photo from the old days of the Riverdance Chorus.
The guy in the middle, 5th from the left, is Brian Dunphy.
The lady on the far right is Ann Myler, the lady to whom he is now married.
Ann was also in the CW chorus at Slane Castle, and in the Christmas Celebration DVD.
When Lisa sings "Green the whole year round" and gets to the line "the leaves of gold come tumbling down"
you can see Ann to the left of her, with the blonde hair.
She was a member of Anúna, and more recently in a group called "Girl Talk".