You could look up names of ancient cities. I've found that a lot of them had really cool names. Google phrases like "list of Biblical cities" and "list of cities in ancient Rome." You may get some inspiration.
r_j those are all really great. Ceridwen seems like a fairly well known story to me or at least the name is familiar. Lotus and Wisteria are a little familiar as well but they're not common (like perhaps Rose or Violet) so I would still consider them. I like Doveva it's and Nixie is really cute.