If you gnoing to change the gnames of gnomes then don't tell anybody your doing it. Least you have "the race formerly gknown as gnomes".
I see what you did their good Sir.
Well, if your looking for something that "rolls off the tonge", i would try maybe your "name", Gossamer? ( i know its the name of the hair monster from Looney-Toons but hey).
You could also take some of my other ideas and shorten them up, Glee-Neblin, for example.
Maybe Joyblin...Nibelung, Andvari, maybe take what you dont like, Garden Gnome, and mash the names together? Garrome? makes it sound a bit more mean
Erden-Bewohner Means "Earth Dweller", in German, maybe use a Latin Translation... Solumunum... "Soil one", one from the soil?
... hope this is helping atleast