My thanks to you all for your suggestions and contributions to the inquiry. It remains a great tune. I have so far turned up three 'culinary' type references to the Galtee Mountains, one pertaining to a type of sausage for which the region is known, another to the cheese from the area, and a third for a species of bee found there and the fine honey it produces. However, still no definitive hit on who the Galtee Rangers were.

Tom D.