The first thing I have to remember when studying the celts is that a lot of their original works have been changed over the years by the church to make the stories appear to have some thread of biblical truth.

In Connla and the Fairy Maiden, they mention the word judgment day and another word, I forget. Those were not in the original but were added probably after St. Patrick came to Ireland. The fairy maiden comes to Connla and pleads with him to come to a place where there is neither death nor (sin) or sorrow. Sorrow will be important later because in other stories, sorrow is always the response of the victim to a tragedy. I have seldom seen the victim react with rage. Perhaps this will change as I read further. Anyways, as the king sees his son talking with this invisible women, he calls a druid to cast her away with his spells. I have to read further but I believe that druids and such the means by which the celts fought against their fear of the fairies. "We dare'nt go a hunting, for fear of little men". The druid casts her away but she returns later and succeeds in bringing Connla away from his father. Just from this story, the maiden tells of a wonderfull place where there is nether sorrow nor death. She is a fairy and perhaps fairy's embody the celtic longing for immorality and seemingly inherent pension for sorrow. That's what I think I can learn. A maiden fairy and bids a young handsom man to come with her to a place where he will neither experience death nor sorrow. What celtic man would not be entertained by this? The druid trys to overcome her but it doesn't work. Another thing that is interesting is how the son is not afraid when he sees her coming to him. Maybe she is one of the good faires, as is talked about in FFTI. I'm going to return to this story after reading more and see if it makes more sense.