are Emerelda and Mirabela good names for characters in a children's book?

[GlitteringGrass]

They are both princess and twin sisters (although not identical). Also neither wants to be queen and they are both mischievous (but not tomboys). Has this been done before?

First sounds too much like esmerelda and second like mirabella spelt wrong.

Sounds a lot like The Little Princess, although there is only one of her.

I don't really like the names. Prefer Emerald and Mirabel.

As a parent I would never call twins such similar names, plus I'm afraid I don't like names that just look misspelled (even in fiction!). I agree that Emerald and Mirabel would be better.

As for whether your story concept has been told before, I suspect that no story is ever truly unique, at least not at such a high level. I don't think it matters so long as your characters are good and you can tell an interesting story.

Just makes me think of Anastasia and Drizella to be.honest.

There's certainly similar ideas out there. Is it the pony mad princess who's a tom boy who doesn't want yo be a princess? Anyway dd2 went through a princess phase and reading them and have come across that sort of idea.

When mine were that sort of age as I assume you're aiming at by the subject matter they liked shortish names that were. "pretty", a bit flowery sounding, but that they could read easily rather Tha having to think about. Lily-Anna would be fine but not Lilianna because it isn't easy to see immediately.

Mirabelle has been used for a princess already. Emeralda has too, but only in a short story by Joan Aiken.