[Airerûthiel]

I don't know a whole lot about the Elves either, but here's my guess: As far as I recall, Lúthien was of pure Elven blood when she married Beren, so I think it would probably work in the same way as Arwen and Aragorn's marriage. I will however admit that my memory of LotR is sketchy, so please feel free to tell me if I'm wrong.