[name_m]Hi[/name_m] there.
[name_f]Cecilia[/name_f] & [name_f]Mabel[/name_f] are so lovely! And [name_m]William[/name_m] is an awesome boy choice. Are you opposed to [name_f]Ruth[/name_f] as a fn? I love [name_f]Ruth[/name_f], & it feels like a perfect fit w/Cece & [name_f]Mabel[/name_f]. Especially w/the nn [name_f]Ruthie[/name_f].
Here are my thoughts on your list:
Lillian-I think it’s a great name. Smart, quiet, sweet, old fashioned, feminine but not frilly. It’s pretty popular if that bothers you, but still a lovely name that goes really well w/Cecilia & [name_f]Mabel[/name_f]. Especially w/the nn [name_f]Lilie[/name_f].
Emmylou-I don’t know. It’s not my cup of tea really, because it doesn’t quite feel like a proper name. I’m not a fan of [name_f]Emmy[/name_f] period, but I’d at least do something like [name_f]Emma[/name_f] [name_u]Louise[/name_u] nn [name_f]Emmylou[/name_f].
Georgia-Feels like a good fit. Too bad your husband isn’t on board. [name_f]Do[/name_f] you guys like [name_f]Georgina[/name_f] or [name_f]Georgiana[/name_f]?
Louise-Yes, I like [name_u]Louise[/name_u]! It’s really sweet w/your crew, & the nn [name_f]Lulu[/name_f] is darling.
Etta-I kind of like it for you, even though it feels a bit nick-namey. Maybe [name_f]Henrietta[/name_f] nn [name_f]Etta[/name_f]?
Winnie-Love it! Also feels nick-namey on its own, but it’s just the cutest anyway. Lots of great [name_f]Winnie[/name_f] full names if you’re interested. I like [name_f]Anwen[/name_f], [name_f]Arwen[/name_f], [name_f]Branwen[/name_f], [name_f]Ceridwen[/name_f], [name_f]Elowen[/name_f], [name_f]Gwendolen[/name_f], [name_f]Morwenna[/name_f] & [name_f]Wilhelmina[/name_f].
Eloise-Beautiful name. Such a good balance of gentle yet spunky. [name_m]Classic[/name_m] & well known but not terribly over done. You could do the nn [name_u]Lou[/name_u] or [name_f]Lulu[/name_f] here too.
A few other ideas that you may like:
[name_f]Adeline[/name_f]
[name_f]Alice[/name_f]
[name_f]Audrey[/name_f]
[name_f]Audra[/name_f]
[name_f]Ada[/name_f]
[name_f]Beatrice[/name_f]
[name_f]Beatrix[/name_f]
[name_f]Clara[/name_f]
[name_f]Clementine[/name_f]
[name_f]Dorothy[/name_f]
[name_f]Fern[/name_f]
[name_f]Flora[/name_f]
[name_f]Frances[/name_f]
[name_f]Greta[/name_f]
[name_f]Hattie[/name_f]
[name_u]June[/name_u]
[name_f]Louisa[/name_f]
[name_f]Magnolia[/name_f]
[name_f]Nora[/name_f]
[name_f]Olive[/name_f]
[name_f]Pearl[/name_f]
[name_f]Phoebe[/name_f]
[name_f]Primrose[/name_f]
[name_f]Penelope[/name_f]
[name_f]Rosalie[/name_f]
[name_f]Thea[/name_f]
[name_f]Violet[/name_f]
[name_u]Vivian[/name_u]
[name_f]Willa[/name_f]
[name_f]Hope[/name_f] this helps. 
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