Originally Posted by Eoin
Possibly cos they threatened to out him anyway, so he figured he might as well be involved in it and get his story written in the best way possible?
I would say this is the most likely answer, they most probably had wind of the story and threatened to out him. As you would imagine I doubt it would have been quite so favourable to Dónal Óg.
So he probably did some sort of deal with them, that way he was able, to a certain extent, control what was written about him.
Just starting the book now, does indeed seem like a cracking book.