Struggling with names this time around! We already have three sons: [name_u]Connor[/name_u], [name_u]Emmett[/name_u] and [name_m]Ernest[/name_m].
For a boy I’ve been pushing for [name_m]Caspar[/name_m] (family name) and my husband has been liking [name_m]Shepherd[/name_m] and [name_u]Atlas[/name_u]. He’s vetoed my [name_u]August[/name_u] and I’ve vetoed his [name_u]Callum[/name_u].
For a girl neither of us have strong feelings for one particular name. We’ve been throwing around [name_f]Elowen[/name_f] but it hasn’t suck. I’m also a little weary of using another E name but not ruling it out. We had [name_f]Aurora[/name_f], [name_f]Eva[/name_f] and [name_f]Willa[/name_f] picked out in our last pregnancies but they feel used now.
Any and all suggestions are appreciated! Bonus points for Scottish names!
TIA!!
Congratulations!
I really like all of your options so far. [name_m]Caspar[/name_m] is my personal favourite, though I do wonder if it’s a little close to [name_u]Connor[/name_u]? 
I certainly think it’s usable.
Shepherd is gorgeous too, love the gentle nickname [name_m]Shep[/name_m]. [name_u]Atlas[/name_u] I like, but I think it’s feeling quite trendy now, and also feels like a bit of a wild card with your other children’s more traditional names.
If you like [name_m]Caspar[/name_m], you might like the Scottish name [name_m]Kester[/name_m]? It’s a Scottish form of [name_m]Christopher[/name_m].
Others…
Alistair
[name_m]Calvin[/name_m]
[name_u]Jasper[/name_u]
[name_u]Rowan[/name_u]
[name_m]Fraser[/name_m]
[name_m]Innes[/name_m]
[name_m]Struan[/name_m]
[name_m]Arthur[/name_m]
[name_m]Orson[/name_m]
Mirren
[name_f]Morven[/name_f]
[name_f]Flora[/name_f]
[name_u]Sorrel[/name_u]
[name_f]Daphne[/name_f]
[name_f]Eveline[/name_f]
[name_f]Thea[/name_f]
[name_f]Ailsa[/name_f]
[name_f]Cecily[/name_f]
Cadogan
[name_u]Callahan[/name_u]
[name_m]Bernard[/name_m]
[name_u]Charlie[/name_u]
Lillian
[name_f]Aura[/name_f]
[name_f]Calla[/name_f]
[name_f]Winona[/name_f]
[name_f]Calliope[/name_f]
[name_f]Ayla[/name_f]
[name_f]Elodie[/name_f]
August [name_m]Shepherd[/name_m] and [name_u]Callum[/name_u] [name_m]Shepherd[/name_m] would be gorgeous, but since those are off the table, I think [name_m]Caspar[/name_m] [name_m]Shepherd[/name_m] is the best of both worlds!
I like [name_m]Shepherd[/name_m]! (And also do not like [name_u]Callum[/name_u] haha) Here are some other ideas…
Rory
[name_f]Evie[/name_f]
[name_u]Evelyn[/name_u]
[name_u]Willow[/name_u]
[name_f]Charlotte[/name_f] or [name_f]Lottie[/name_f]
[name_f]Fiona[/name_f]
[name_f]Isla[/name_f]
[name_f]Orla[/name_f]
Evander
[name_u]Finn[/name_u]
[name_u]Rowan[/name_u]
[name_u]Reid[/name_u]
[name_u]Hunter[/name_u]
[name_u]Grayson[/name_u]
Hi there.
I love [name_m]Caspar[/name_m] w/your crew, & especially since it’s a family name. I guess it’s not cheesy to have two C-R names & two E-T names. It’s a nice bookend, if you want to look at it that way. 
I like [name_u]Atlas[/name_u] too. [name_m]Shepherd[/name_m] is not my cup of tea. [name_u]August[/name_u] & [name_u]Callum[/name_u] are perfect though!
Here are a few boy suggestions that you may like:
Angus
Alden
Brennan
Clive
Crispin
Clark
Desmond
Ferris
Fergus
Graeme
Gilbert
Hamish
Hugo
Iain
Jameson
Keats
Knox
Lloyd
Laurence
Malcolm
Niall
Otis
Oscar
Rafe
Rhys
Rafferty
Simon
Thatcher
As for a girl, [name_f]Elowen[/name_f] is a beautiful name. I’d say if it’s your favorite & the only name that you can agree on, go for the third E. If you may be just as happy w/a non E name, try for that so that [name_u]Connor[/name_u] isn’t left out. I think that [name_f]Willa[/name_f] is my favorite from your probably tired of list. It seems like a great compliment to your sibset.
Here are a few other girls ideas:
Adele
Adela
Bridget
Branwen
Celia
Cecily
Freya
Flora
Fiona-my dog’s name! 
Gwyneth
Lucy
Louise
Louisa
Maeve
Matilda
Maureen
Nora
Phoebe
Penelope
Rose
Rosalie
Sloane
Thea
Tessa
Violet
Hope this helps. 