I've thought Kreacher might have been his companion, too. You'd need one, if only because the person who drinks is going to go loopy long before he's done.

I enjoyed promulgating the Dementor theory, but I dunno about writing it up as fic – it's more the kind of thing sollersuk does when she writes these pseudo-scholarly bits of history of magic in early Britain. However, I will bear your encouragement in mind.