I love all the Anglo-Saxon/Anglo-Saxon derived (AKA Rohirric) names right off the bat: Theoden, Theodred,
Eothain, Eomer, Eowyn,
Unferth, Hama,
Grimbold, Gamling.... Heck, I even like the ones that aren't supposed to be people: Guthwine....
On a related note, Gandalf, Dain, Durin... a
lot of Tolkien-names aren't actually originally Tolkien, so you could attempt to argue that you're naming the kid after some ancient mythical hero, not a LotR character.
Actually...
[AD runs off to find a copy of The Poetic Edda, then starts thumbing through the index]
Hey, Dain.
Dís is one of the non-original ones. It means something along the lines of "Angel" or "(Female)
Guardian Spirit." Plural is Dísir, since it's not originally supposed to be a name, but whatever. It's actually not a bad name, IMHO.