The words are in one of Harry Swan's books - probably The Book of Innishowen (No, I've just checked " 'Twixt Foyle and Swilly" - which means Innishowen anyway. The poem is attributed to David A. Campbell. There are six four line verses. If the original poster pastes in what words he has, corrections can be made and effort minimised. However, here are the place names used - in order: Innishowen, Clonmany, Meendoran Bridge, Gap of Mamore, Mary of Malin, Rose of Moville, Bay of Culdaff, Carndonagh, old Barnan, County Fermanagh, Innishowen.