Cool! Using my first name as well.
A LOTR character: Dernhelm
A character from The Hobbit: Dwalin
A place in Middle-Earth: Dimrill Dale
Things from LOTR: Doors of Moria
Beasts/Monsters: Draugluin
A Silmarillion character: Daeron
Another Barrow Downer: Durelin
Actor from LOTR movies: Dominic Monaghan