Drat, I can't make heads or tails that makes much sense. But I'm thinking it's
Bilbo, or something like that.
I don't know when he stole taters, but it's very possible, knowing his heritage.
The petty dwarves would be Thorin and Company when they tumbled into his hobbit-hole.
The terrorized wood-elves would have to be Thrandruil's(sp) folk while he was wearing the Ring.
The misplaced by a Maia... I don't know, maybe when Gandalf left him in the Misty Mountain tunnels?
Oh, that really can't be it; can it?