Apparently in Belfast his...grandfather? I think it was his grandfather. Anyway some Gallagher dude dug up his wife's wild rose bushes and she told him not to because that was where the wee folk lived and they didn't like their home disturbed. He did it anyway. So the story is that the wee folk put a curse on the family. Something about first borns...something. Which apparently has seemed to have come true. So he wants to plant wild rose bushes for the wee folk. In a seventy-foot wide shamrock.
(This is what people do when they retire...)