[Salocin]

You guys are forgetting that the Westron of Middle Earth was translated into English and Anglasized before being published in Tolkien's books. Tolkein may have adapted Lobelia's name to "Lobelia" as a sort of a phonological joke.

As far as Arwen's name goes, I'm with the people who say it meant noble lady. Manardariel admitted Ar can mean "high" as in noble of birth.

The real question is why Arwen has a manish root in her name. "Ar" meant kingly in the tongue of the Numenorians. When they began to turn away from the west, the kings used this in their names, Ar-Andunakor, Ar Zimrathon,...,Ar-Pharazon, and it can be seen in Aragorn's name as well as those of other desendents of Isildur. Before they turned away, the kings of Numenor used "Tar-" the elvish equivalent, so why isn't Arwen's name Tarwen?