Middle names for Sol

So I had two girls names I immediately knew I liked as soon as I found out I was pregnant. But I REALLY wanted my husband to feel included, so we've been going through names. Turns out there are several he likes better.

His favorite girl name so far is Sol, but I can't seem to find the right middle name. I have lots for Marisol, but he doesn't want to use that because it's his grandmother's name and he thinks he'll feel awkward.

The closest I've found so far that I like is Persephone Sol, but (AMAZINGLY) his best friends girlfriend has a daughter named Persephone. So that may be out.

I wanted to use the name Dawn after my grandfather who passed away this year. But it doesn't sound right.

Help?