I repeat... WHAT?! WHERE?
Tell us. Now.
He's mentioned in a book on planes-walking. I couldn't tell you which book it is off the top of my head. But some mage wanted to visit the planes of oblivion, and he tries all these different ways of transporting himself there, and finally it's Divayth Fyr who points him in the right direction. Apparently he's still alive and kicking.
I'm gearing up for a mod for Skyrim that will rework the College of Winterhold quest line... I'm thinking about including Divayth Fyr.