He's a guy you'll meet that asks you if you know who "The Gourmet" is and says he's collecting herbs to impress him with his cooking abilities and would really, really like to meet him. I'm surprised you never ran in to him yet. When he spawns, the site he's at never, ever respawns again. he just stands there wandering back and forth forever more (unless you kill him, in which case his body stays there - or pile of ashes if you're me!). The only exception I've ever seen to that is when once, and only once in my many, many characters he got caught up in a vampire attack. Then he disappeared and respawned way up by Solitude! Freaky!