I voted for [name_f]Ophelia[/name_f] [name_f]Mavis[/name_f], Veridiana [name_f]Mabel[/name_f], and [name_f]Eudora[/name_f] [name_f]Pearl[/name_f]!
[name_f]Ophelia[/name_f] [name_f]Mavis[/name_f] is my most favorite out of the three, but I do think that Veridiana [name_f]Mabel[/name_f] would be cute too! Veridiana gives me such an exotic, vivacious vibe that I absolutely love while [name_f]Ophelia[/name_f] gives off a beautiful, vintage, and elegant feel! I voted for [name_f]Eudora[/name_f] [name_f]Pearl[/name_f] as well because it’s a great combo, but the other two name combinations match better with [name_m]Zebediah[/name_m] [name_u]Sterling[/name_u].
Nicknames for [name_f]Ophelia[/name_f] could be [name_u]Elia[/name_u]/Ellia, [name_f]Ellie[/name_f], [name_f]Elle[/name_f], Ope, [name_f]Opal[/name_f], Phi/Phe, PhiPhi/PhePhe, Phaye, [name_f]Helia[/name_f], [name_u]Philly[/name_u]/Phillie, [name_f]Lia[/name_f], [name_f]Pia[/name_f], [name_f]Phelia[/name_f], Oli, [name_f]Olia[/name_f], [name_u]Li[/name_u], LiLi, [name_f]Lili[/name_f], LaLa, [name_f]Lala[/name_f], and Ophi. [name_f]My[/name_f] favorites are [name_f]Ellie[/name_f], [name_f]Elle[/name_f], Phaye, [name_f]Lia[/name_f], [name_f]Lili[/name_f], and LiLi. However, I think [name_f]Elle[/name_f] doesn’t agree with the [name_m]Zeb[/name_m] nn like the other five do.
I love [name_f]Vera[/name_f] as a nickname for Veridiana! I also think DiDi, [name_f]Didi[/name_f], Veridi/Veridy, [name_f]Era[/name_f], RiRi, Riri, [name_f]Ida[/name_f], Eridy/Eridi, [name_u]Van[/name_u], [name_f]Veda[/name_f], and [name_f]Vana[/name_f] would be adorable too, with Veridy, [name_f]Vera[/name_f], and [name_f]Veda[/name_f] (pronounced as vay-duh) being my favorites! In my opinion, [name_f]Vera[/name_f] & [name_m]Zeb[/name_m], [name_m]Zeb[/name_m] & Veridy, and [name_m]Zeb[/name_m] & [name_f]Veda[/name_f] are great nickname combos! 
If you chose [name_f]Eudora[/name_f] [name_f]Pearl[/name_f], I think great nicknames would be [name_f]Ora[/name_f], [name_f]Eura[/name_f]/Ura, Euda/Uda, Eora, [name_f]Eda[/name_f], [name_f]Rora[/name_f], [name_u]Rue[/name_u], [name_u]Rae[/name_u], and RaeRae. [name_f]My[/name_f] favorites are [name_u]Rae[/name_u], RaeRae, [name_f]Rora[/name_f], and [name_f]Eura[/name_f]! In my opinion, [name_m]Zeb[/name_m] & [name_f]Eura[/name_f] or [name_m]Zeb[/name_m] & [name_f]Rora[/name_f] would be the best nickname combo!
Names from the rest of your list that I also admire are [name_f]Honora[/name_f], [name_f]Ingrid[/name_f], and [name_f]Flora[/name_f]!! Personally, my favorite combos using this list would be [name_f]Honora[/name_f] [name_f]Ingrid[/name_f], [name_f]Flora[/name_f] [name_f]Ingrid[/name_f], [name_f]Magnolia[/name_f] [name_f]Ingrid[/name_f], [name_f]Magnolia[/name_f] [name_f]Fern[/name_f], and [name_f]Honora[/name_f] [name_f]Fern[/name_f]. Cute name combos that are possible, but aren’t necessarily my favorite are [name_f]Honora[/name_f] [name_f]Abra[/name_f], [name_f]Honora[/name_f] [name_f]Gilda[/name_f], [name_f]Abra[/name_f] [name_f]Ingrid[/name_f], [name_f]Ingrid[/name_f] [name_f]Fern[/name_f], [name_f]Ingrid[/name_f] [name_f]Magnolia[/name_f], [name_f]Magnolia[/name_f] [name_f]Abra[/name_f], [name_f]Magnolia[/name_f] [name_f]Flora[/name_f], [name_f]Magnolia[/name_f] [name_f]Gilda[/name_f], [name_f]Flora[/name_f] [name_f]Fern[/name_f], [name_f]Fern[/name_f] [name_f]Magnolia[/name_f], [name_f]Gilda[/name_f] [name_f]Ingrid[/name_f], [name_f]Gilda[/name_f] [name_f]Fern[/name_f], [name_f]Gilda[/name_f] [name_f]Magnolia[/name_f], and [name_f]Gilda[/name_f] [name_f]Honora[/name_f].
Nicknames for [name_f]Honora[/name_f] could be [name_f]Nora[/name_f]/Norah, [name_f]Ora[/name_f], [name_f]Ona[/name_f], [name_f]Rora[/name_f], and [name_u]Noa[/name_u]/Noah with [name_f]Nora[/name_f] and [name_f]Rora[/name_f] as my favorites. [name_m]Zeb[/name_m] & [name_f]Nora[/name_f] or [name_m]Zeb[/name_m] & [name_f]Rora[/name_f] would be really adorbs!
Nicknames for [name_f]Magnolia[/name_f] could be [name_f]Mag[/name_f], [name_f]Maggie[/name_f], [name_f]Aggie[/name_f], [name_f]Nola[/name_f], [name_f]Nolia[/name_f], [name_f]Lia[/name_f], [name_f]Lili[/name_f], LiLi, [name_f]Malia[/name_f], Mana, [name_f]Ana[/name_f], [name_f]Mia[/name_f], [name_f]Nia[/name_f], [name_f]Gia[/name_f], Oli, [name_u]Noa[/name_u]/Noah, NiNi/Nini, [name_f]Lala[/name_f], LaLa, [name_u]Mo[/name_u], and [name_f]Mali[/name_f]. [name_f]My[/name_f] favorite nicknames for this name are [name_f]Mia[/name_f], [name_f]Malia[/name_f], [name_f]Mali[/name_f], and [name_f]Nola[/name_f]. Out of this bunch, I favor [name_f]Malia[/name_f] the most. [name_f]Malia[/name_f] & [name_m]Zeb[/name_m] would be a fantastic combo!
Possible nicknames for [name_f]Flora[/name_f] could be [name_f]Flo[/name_f], [name_f]Lala[/name_f], LaLa, [name_f]Ora[/name_f], [name_f]Rora[/name_f], [name_f]Lora[/name_f], [name_f]Fae[/name_f], Lor/Lore, [name_f]Lori[/name_f], [name_f]Lolo[/name_f], and LoLo. [name_f]Lolo[/name_f] pronounced as [name_f]Lulu[/name_f] would be darling!
To me, [name_f]Fae[/name_f], [name_f]Flo[/name_f], [name_f]Lora[/name_f], [name_f]Rora[/name_f], and [name_f]Lori[/name_f] are truly ideal and would correlate well with [name_m]Zebediah[/name_m]’s nn!
Since [name_f]Gilda[/name_f] is already short, I believe it doesn’t need a nickname, but I understand it’s to each’s own. Here are some suggestions: [name_f]Gigi[/name_f]/GiGi, [name_f]Ida[/name_f], [name_f]Lida[/name_f], [name_m]Gil[/name_m], [name_u]Gilly[/name_u], [name_f]Lili[/name_f], LiLi, [name_f]Lala[/name_f], LaLa, [name_f]Didi[/name_f]/DiDi, [name_f]Lia[/name_f], [name_f]Gia[/name_f], [name_u]Ali[/name_u], and [name_f]Dilly[/name_f]. [name_m]Zeb[/name_m] & [name_f]Lida[/name_f] really stands out to me! 
Last but not least, [name_f]Ingrid[/name_f]. [name_f]Ingrid[/name_f] is a little tricky to make nicknames for, so, unfortunately, I could only come up with these few: Inid, Riri/Riri, [name_f]Didi[/name_f]/DiDi, NiNi, [name_f]Gigi[/name_f]/GiGi, [name_m]Iggy[/name_m], [name_f]Rin[/name_f], and [name_f]Indi[/name_f]. I like [name_f]Gigi[/name_f], Inid, and [name_f]Indi[/name_f] for this name, and they’d compliment their brother’s nickname very well!
I hope this helps, and I can’t wait to find out what you choose! Please give an update to let us know what you pick! 