No info yet
I vote Lauren Elyse, with Lauren Elyse as runner up.
I agree this is quite an eclectic mix of names!
I really like David Walter, it is by far my favorite.
I want to like Dexter Ivan, but the TV show Dexter (which I've only seen once) kind of puts me off the name. However, the name does seem to be climbing and the show is off the air so it seems like the kind of pop-culture association that will fade quickly.
Gerard Castle is OK, but not a favorite for me. Just never been a fan of Gerard & Castle strikes me as a feminine name. I knew a women with the firstname Castle once, so I'm sure that's why I think of it as a feminine name. It's unusual enough that I imagine it would strike other people as more unisex/surname as first.
Cealach Olaf is the only name on your list that I don't care for at all. Neither are really my style and I suspect you'll have a lot of spelling/pronunciation issues with Cealach.
My favorite boy names currently include Henry, William, Arthur, Augustus & George.
The problem with COC took me quite a few moments to figure out. Even then, it does seem like a stretch (COK would be more obvious/potentially problematic I think). I do like Ceallach Ivan better than Caellach Olaf, even without considering the possible initials.
DIC I did catch right away. I honestly would probably try to avoid that one. Dexter Olaf would be fine if you wanted to switch things up.
I really like Violet Annelies. I agree that using Violet would open up more names for you. This is especially important since the potential "theme" created with Annelies would be German names-and those don't seem to be your favorite category.
If you want a theme for girl names, I do like the idea of E & I vowels. I also agree with the idea of modern/feminine names. Or, you can simply have the "theme" of using girl names that are from your absolute favorites list. :)
After reading your post & Miriam's reply, I have 2 thoughts. What if you name her Margaret, making it clear that it's an honor name after your deceased aunt? Then chose a middle name that is an honor name from his side of the family. Maybe that could help your mother in law get over any concern that Margaret isn't after a deceased relative?
The other thought would be to run some names by her & watch her reaction when you say Margaret. You don't have to reveal the sex to do this-just throw out, "if it's a boy we're thinking Jack, Jake or John. If it's a girl, maybe Jane, Anne or Margaret." Set it up so it sounds like you're still just in the brainstorming stage of selecting a name, not like you are already attached to Margaret.
I think you will probably have pronunciation issues with both names. It's just a matter of deciding how much that will bother you. Emmeline might have fewer issues since you have Emme standing by as a nickname.
Do you plan on having more kids? If so, you might want to consider which of the names you like better. For me, Eamon & Emmeline are too close to use for siblings. If you use one now, would you regret not being able to use the other later?
Of your girl options, I prefer Emmeline Clare. It better fits with the feminine/classic feel of Catherine Maeve. I think Reese feels a little too modern/surname/unisex.
I like all of your girls names. If I had to rank them order for a sister named Keara, it'd be Nora, Margaret(Maggie), Caroline & Claire. Some other suggestions-Fiona, Lucy, Bridget, Molly, Sarah(Sadie), Megan, Cora
I also quite like your boy names. In order, I'd say Patrick, Sean & Ryan. Some other suggestions for boys are Owen, Ian, Rory, Rowan, Declan, Quinn & Evan
I really like the flow of Colette Nadia "Fulton" "Russel"
Nadia also seems more surprising (like Colette) while Sophia and Addison feel trendier/more common.
Avery, Sage & Mason fit really well together style-wise. It is very popular, but not really that different than Avery (ranked #13 for girls last year).
Personally, I prefer Bennett & Marshall from your list as Mason and Nolan aren't really my style (though they seem to fit best with the style of your daughter's names).
Without knowing anything about the last name, my preferene is Eli Clay.
I really like Edith, and Edie is adorable! I happen to be a fan of the "old lady" and "old man" names.
I also really like Isla, but I agree that they aren't ideal together. The flow of 2 syllables followed 2 syllables isn't great, especiallly with the emphasize on the 1st syllable in both names. I also find that the ending "th" runs into the start of Isla in a way I don't find pleasing. It's too much of a stop when I say it naturally. When I try to say it with less of a stop, the names run into each other-Edithisla.
Of the names on your traditional list, Kira/Keira is the only one that feels like a good match for Tatum. I think they both share a more modern/spunky quality. Claudia & Victoria both feel more vintage/musty/proper to me. Think images of Victorian ladies vs. modern tomboys.
Of your less traditional names, I really like Delaney with Tatum. Both read as feminine but still with that solid modern/spunky kind of vibe.
Parker reads as a boy name to me. I would assume Tatum & Parker were a sister/brother sibling set.
I don't really care for Diem at all.
I also know of a sister set with those names. As far as I know, it's never been a problem for them.
I prefer Kathryn. However, Cathryn wouldn't be a bad choice, and it is visually more distinct next to Karen.
I think your first option is best as far as flow. I'm also not crazy about all of the vowell starting sounds for the other 2.
I remember getting those poppies as a child. I always knew it was to commemorate/assist veterans. Liberty Memorial (the U.S.'s national WWI museum) has a really interesting field of poppies exhibit under a glass bridge when you first enter the museum.
I have to agree with the previous posters. Also, it just doesn't seem worth the effort of a name change just to add an "h".
I could see something along the lines of Lauren, Laurel or even Lorelei perhaps.
With a 1 syllable first name, I like middle names where the stress is one the 2nd syllable. You'll find this with a lot of French names.
Some other suggestions include Kaye Celeste, Kaye Danielle, Kaye Lisette.
A lot of longer middle names (3+ syllables) also seem to flow pretty well with a 1 syllable first name. Kaye Gabrielle, Kaye Madeline, Kaye Juliet, Kaye Genevieve, Kaye Vivienne.
GAB isn't that bad. And you could reasonably get Gabe from it, if you wanted another nickname option.
I really like Griffin Arthur, but I've always had a bit of a soft spot for Arthur.
Griffin Andrew is also really nice.
Not a fan of the repeated 2 syllalbe with "en" endings you get with Griffin Allen.
I agree with previous posters about dropping Cain/Kane. The main assocition for most people is going to be the Biblical story. Darwin & Noah are both great. However, Noah does strike me as the most mainstream name out of all your choices. If you want something uncommon, you might find yourself disappointed with Noah as a first name.
I'll also second the suggest of keeping the spelling as simple as possible. The names you are considering are long to begin with, using uncommon spellings just seems like it would add even further (and unnecassary) complications.
For girls, I quite like Bethany, Poppy & Harriette. Hattie is also a traditional nickname for Harriette that seems fun & spunky.
I want to like Persephone, but it just seems like so much. Both the length, spelling and the story of Persephone seem like a lot for a little one. As much as I like, it isn't a name I would want for myself.
I would like Symohne if you spelled it Simone.
Annaliese and Dawn are both nice (I especially like Annaliese) but I find them to be too much for a double barrel name. Annaliese is already a double name, so hyphenating it with something else is really a triple barrel name.
Looking at your girl middle names, I think Briar, Viola, Adelaide & Arabella would all make nice first name options. Familiar, but not common, and they all share the same kind of romantic/mythical quality you seem to be going for.
Connor is certainly familiar, but it doesn't strike me as a "classic" firstname like your girl names do. Connor didn't break the top 1000 as a boy's first name until 1981.
Names with similar popularity would be many of the surname as firsts, Cameron, Logan, Riley, Bailey. Do any of these appeal to you?
I think Connor could also work well with other names with Celtic-origins. Brendan, Brennan, Rory, Rowan, Sean or Aiden (though Aiden is very popular/trendy right now). Do these appeal at all?
For classic names, I think more along the lines of William, Peter, James-or maybe what the Baby Name Wizard book calls "new classics" Jason, Matthew, Brian.
I'd be interested to know which of these direction you lean towards most, even if you can't use any of the specific names I've listed. It would certainly help us refine our suggestions.
Your girl names strike me as more traditionally classic. They also lean a bit towards vintage revival. I might group them with other names like Sophia, Charlotte, Lila, Amelia, Victoria, Lucy, Annabelle, Rose, Audrey, Abigail.