… which isn’t [name_f]Euphemia[/name_f] or [name_f]Elizabeth[/name_f] (I’d be open to variants though). Any ideas?
[name_f]Persephone[/name_f] (have this on my list with nn effie)
[name_f]Serafina[/name_f]
[name_f]Delphine[/name_f]
[name_f]Sophie[/name_f]
Sophrona
or you could do the initials F.E… I have [name_f]Imogen[/name_f] [name_f]Viola[/name_f] with the nn [name_f]Ivy[/name_f]
[name_f]Iphigenia[/name_f] was my first thought. In Spanish they have an alternative spelling: [name_f]Efigenia[/name_f]. Only a slight change in pronunciation in the first syllable, but would fit [name_f]Effie[/name_f] as a nickname to a T.
[name_f]Stephanie[/name_f]?
That gives you a very recognisable first name with an interesting nn
Thanks for the ideas so far!
My absolute, knock-out, can’t-believe-I-didn’t-think-of-that favourite is [name_f]Persephone[/name_f]! I [name_u]LOVE[/name_u] that name, and [name_f]Effie[/name_f] is sweet and delightful as a nickname for it. Lightens it up and makes it definitely wearable for a sweet little girl. @mclola, hats off to you 
no problem
Any name that starts with PH or F would work:
[name_f]Philomela[/name_f]
[name_f]Philomena[/name_f]
[name_f]Phoebe[/name_f]
[name_f]Phaedra[/name_f]
[name_f]Francesca[/name_f]
[name_f]Fiona[/name_f]
[name_f]Fiammetta[/name_f]
[name_f]Felicity[/name_f]
[name_u]Philadelphia[/name_u]
[name_f]Philippa[/name_f]
And those that contain PH or F:
[name_f]Seraphima[/name_f]
[name_f]Seraphina[/name_f] / [name_f]Seraphina[/name_f]
[name_f]Madelief[/name_f] - a stretch I admit, but it could work
[name_f]Hephzibah[/name_f] - if you pronounce it heff instead of hep
[name_f]Nephele[/name_f]
[name_f]Delphine[/name_f]
[name_f]Daphne[/name_f]
[name_f]Aphrodite[/name_f]
[name_f]Josephine[/name_f]
Adelphina
[name_f]Ophelia[/name_f] / [name_f]Ophelie[/name_f]
[name_f]Raphaela[/name_f] / [name_f]Raphaelle[/name_f]
[name_f]Theophaneia[/name_f]
[name_f]Theophania[/name_f]
[name_f]Sapphira[/name_f]
[name_f]Epiphany[/name_f]
[name_f]Zephyrine[/name_f] / [name_f]Zephyra[/name_f]
[name_f]Persephone[/name_f]
Tisiphone
[name_f]Ginnifer[/name_f] / [name_f]Jennifer[/name_f]
AIdelpha / [name_f]Adelpha[/name_f]
Neferu / [name_f]Nefertiti[/name_f] / Nefertiri / Nefertari
Zeferina
[name_f]Zafira[/name_f]
[name_f]Winifred[/name_f]
Names that could work anyway:
[name_f]Elspeth[/name_f]
Elsabeth
[name_f]Althea[/name_f] / [name_f]Elthia[/name_f]
[name_f]Evanthe[/name_f]
[name_f]Eithne[/name_f]
[name_f]Ianthe[/name_f] / Eianthe
[name_f]Bethany[/name_f]
Probably too much of a stretch - [name_f]Ginevra[/name_f]
I’ve tried not to repeat:
[name_f]Adephine[/name_f]
[name_f]Effemie[/name_f]/[name_f]Effemy[/name_f]
[name_f]Josefa[/name_f]/[name_f]Josepha[/name_f]
[name_f]Josephina[/name_f]/[name_f]Josephine[/name_f]
[name_f]Seferina[/name_f]
[name_f]Sephora[/name_f]
[name_f]Stefania[/name_f]/[name_f]Stefanie[/name_f]
[name_u]Zefir[/name_u]
[name_f]Zephira[/name_f]/Zephora
[name_f]Zephrine[/name_f]
I like the idea of [name_f]Persephone[/name_f] nn [name_f]Effie[/name_f]. Other than that, I like Euphrasie.
I love nickname [name_f]Effie[/name_f]! I thought of using it for [name_f]Evangeline[/name_f] [name_f]Fae[/name_f] or another F middle name.
More fabulous ideas!
I [name_u]LOVE[/name_u] [name_f]Madelief[/name_f] nn [name_f]Effie[/name_f] - another one that’s on my list already and I can’t believe I didn’t think to use [name_f]Effie[/name_f] as a nickname! Thank you so much, @greeneyes375. I also really love [name_f]Elspeth[/name_f], and [name_f]Zafira[/name_f] and [name_f]Phaedra[/name_f] are intriguing!
@abertawe [name_f]Ginevra[/name_f] - yes! [name_u]Love[/name_u] it, thank you 
[name_f]Ophelia[/name_f] - another stretch
[name_f]Effie[/name_f] is so sweet; for me it feels windblown and wistful, simple and incredibly soft, and somehow slightly forlorn in a poetic way.
Full names for [name_f]Effie[/name_f] are incredibly difficult, though. I was going to suggest Euphrasie too - the real name of [name_f]Cosette[/name_f] in [name_u]Les[/name_u] Miserables - and [name_f]Effam[/name_f] and [name_f]Effemy[/name_f] are also options. They are old forms of [name_f]Euphemia[/name_f], from where we get the nickname [name_f]Effie[/name_f] originally. The Modern Greek form of [name_f]Euphemia[/name_f] is Efimia, which is pretty too.
Otherwise, perhaps Hefzibah, although I’ll admit that isn’t everyone’s cup of tea.
I think [name_f]Efa[/name_f] would work as a way to get to nn [name_f]Effie[/name_f]. [name_m]Even[/name_m] though [name_f]Efa[/name_f] is shorter, [name_f]Effie[/name_f] seems like it could be a cute pet form (like [name_f]Eve[/name_f] and [name_f]Evie[/name_f]). The suggestion of Madeleif is great!
The first thing that came to mind was a fn starting w/F & a mn starting w/E…maybe:
[name_f]Francesca[/name_f] [name_f]Elisabetta[/name_f]
[name_f]Felicity[/name_f] [name_f]Elspeth[/name_f]
[name_f]Fleur[/name_f] [name_f]Emiliana[/name_f]
[name_u]Fifer[/name_u] [name_u]Evelyn[/name_u]
[name_f]Flavia[/name_f] [name_f]Eleanor[/name_f]
Good luck!
Or [name_f]Aoife[/name_f] too!
Yes, @impwood and @anothersunnyday - [name_f]Efa[/name_f] made me think of [name_f]Aoife[/name_f] too. I really like both, thank you!
Also glad so many like [name_f]Effie[/name_f]
[name_u]LOVE[/name_u] [name_f]Persephone[/name_f] nn. [name_f]Effie[/name_f]. That would be amazing! I thought of [name_f]Iphigenia[/name_f] and Effeny (but seriously, [name_f]Persephone[/name_f]!)