What are some french and german names that mean sun and moon?

Sol, Soleil, Lune, Luna.

The French and German use real people names for people. Americans come up with all sorts of weird stuff and their children are stuck with those names for life.
I am not sure if it is still the case, but in France there was a list of names from which people could choose by law, so only those names could be used. For variety the french put two names together sometimes, for names like Marie-Claire, or Jean-Pierre.

In French "sun" is "le soliel", and "moon" is "la lune". In German "sun" is "die Sonne" and "moon" is "der Mond". Curious that the gender allocation is different!

I am not aware that any of those four words is used as a personal name, but in English I have never known anybody called "Sun" or "Moon".

These don't precisely mean sun but Celeste means heavenly and Celine means sky or heavenly, and Clara and Claire mean clear/bright. They all remind me of sunshine so hopefully this helps. As for moon, all I can come up with is Luna.

no