>>You probably said earlier, but which Dhonnchadha is this?<<
Lil Nic Dhonnchadha - Aided Muirchertaig Meic Erca - Dublin Institute of
Advanced Studies 1980 where all the existing texts on the story are
presented, variant readings and a vocabularly. She gives some good info on
the development of the story and shows some of the older variants including
the triple death aspect that was lost in the later version.
>>The poem we are focussing on here seems to me to be entirely Christian and
learned without any noticeable folkloric elements at all. The deceased
'hero' of the poem celebrates the fact that he led a virtuous Christian
life. And that's about it.<<
The whole point of the story is the battle between the pagan and Christian
elements. He succumbs to the pagan elements in the story, is cursed by the
priest Cairnech and dies at the hands of a pagan concubine and is left in
Hell. Far from telling the story of a virtuous Christian I'm afraid.