In need of new ideas

We have two wonderful children, [name_u]Finn[/name_u] (boy) and [name_f]Elizabeth[/name_f], and are thinking about adding to our family. After years and years of arguing over names, we still have no girl names on which we agree. So we’re in need of some fresh ideas. I’ve listed the names we each like as well as names we would consider for another son.

Thanks in advance!

His List:
[name_f]Rhiannon[/name_f]
[name_u]Shannon[/name_u]
[name_u]Shae[/name_u]
[name_f]Jennifer[/name_f]
[name_f]Erin[/name_f]

My List:
[name_f]Catherine[/name_f]
[name_f]Tess[/name_f]
[name_f]Cosette[/name_f]
[name_f]Tallulah[/name_f] (the meaning “leaping waters” has special significance)

Our Boy List:
[name_u]James[/name_u]
[name_m]Shepherd[/name_m]
[name_m]Alexander[/name_m]
[name_m]George[/name_m] (I like this one more than he does, but I’m sure he would consent)

Edited for privacy.

Saracita, Thank you for your suggestions! I can honestly say that [name_f]Avalon[/name_f] is not one we’ve considered before, and as the Arthurian legend is near and dear to my husband’s heart, it may just be a winner. I’ve tried suggesting [name_f]Guinevere[/name_f] before, and he doesn’t like it, but [name_f]Avalon[/name_f] is promising!

Edited for privacy.