Heard while scanning radio stations so not sure where... lovely Celtic tune; basic story is a lovely young woman lives in the country, a rich guy rides in to wed (not woo) her, and her father wants the marriage though the woman does not; she and her true love drown themselves, and her father goes mad and continues to believe the marriage will take place. The chorus ran:

Step it out, Mary, my fine daughter
Step it out, Mary, if you can
Step it out, Mary, my fine daughter
Show your legs to the country man (I think - not too sure on that last line)

I also remember one verse when she refuses the country man:

Then up spoke her father sharply
You will do as you are told
You will marry on this Sunday (or something like that)
You will wear the ring of gold

Thanks in advance...