I don't know if it's quite what you're looking for but on Malinkys 'Three Ravens' album there's a song called 'Thaney'. It's written by Karine Polwart and tells the dark tale of St Mungos mother Thanew, who's more commonly known as St Enoch. I had always thought St Enoch was St Mungos father, St Mungo is Glasgows patron saint and there are many tales about him but till I heard this song I'd never heard of the rape and banishment of his mother, well worth a listen. Karine Polwart is a fine storyteller as well as a wonderful singer.