[name_m]Hi[/name_m] everyone. We are looking for a name for brother/sister for DD [name_f]Millicent[/name_f] [name_f]Rose[/name_f] ([name_f]Millie[/name_f]). We like traditional names with cute nicknames, but are open to any ideas. At the moment the only names we both like are [name_m]Thomas[/name_m] (nn. [name_m]Tom[/name_m]) and [name_f]Isabella[/name_f] (nn. [name_u]Izzy[/name_u] or [name_f]Belle[/name_f]) but we’re not sold on either of them and concerned they may be too common. So looking for something similar but slightly more unique!
Hello! The thing that immediately jumped out at me was the double “l” in both of your favorite girl names.
[name_f]Emilia[/name_f]
[name_f]Helena[/name_f]/[name_f]Elena[/name_f]
[name_f]Annabel[/name_f]/[name_f]Annabelle[/name_f]
[name_f]Camille[/name_f]
[name_u]Ariel[/name_u]/[name_f]Arielle[/name_f]
[name_f]Holly[/name_f]
[name_f]Estelle[/name_f]
[name_f]Stella[/name_f]
[name_f]Willa[/name_f]
[name_f]Lucille[/name_f]
[name_f]Penelope[/name_f]
[name_f]Isadora[/name_f]
[name_f]Amaryllis[/name_f]
[name_f]Genevieve[/name_f]/[name_f]Gwendolen[/name_f]
[name_f]Celia[/name_f]
[name_f]Mariel[/name_f]/[name_f]Marielle[/name_f]
[name_f]Astrid[/name_f]
[name_f]Florence[/name_f]
[name_f]Eleanor[/name_f]/[name_f]Eleanora[/name_f]/[name_f]Lenora[/name_f]
[name_f]Matilda[/name_f]
[name_f]Arabella[/name_f]/[name_f]Arabelle[/name_f]/[name_f]Brielle[/name_f]/[name_f]Briella[/name_f]
[name_f]Pearl[/name_f]
[name_f]Flora[/name_f]
[name_f]Veronica[/name_f]
[name_f]Edith[/name_f]
[name_f]Gabrielle[/name_f]/[name_f]Gabriella[/name_f]
[name_f]Emmeline[/name_f]/[name_f]Emmaline[/name_f]
[name_m]Hi[/name_m] there.
[name_f]Millicent[/name_f] nn [name_f]Millie[/name_f] is gorgeous!
I like [name_m]Thomas[/name_m] a lot, but it is sort of common. I like [name_m]Thomas[/name_m] nn [name_m]Tucker[/name_m]! It barely makes sense, but I like it a lot w/[name_f]Millie[/name_f]. [name_f]Isabella[/name_f] is beautiful, but very common. What about the nn Ibbi to stand apart?
More suggestions…
Boys:
[name_u]August[/name_u]/[name_u]Gus[/name_u]
[name_m]Augustus[/name_m]/[name_u]Gus[/name_u]
[name_m]Bastian[/name_m]/Bash
[name_m]Barnaby[/name_m]/[name_m]Barnes[/name_m]
[name_m]Caspian[/name_m]/[name_m]Cas[/name_m]/Caspi
[name_m]Caspar[/name_m]/[name_m]Cas[/name_m]/Caspi
[name_m]Frederic[/name_m]/[name_u]Freddie[/name_u]
[name_m]Ivan[/name_m]/[name_m]Ives[/name_m]
[name_m]Louis[/name_m]/[name_m]Louie[/name_m]
[name_m]Percival[/name_m]/[name_u]Percy[/name_u]
[name_m]Philip[/name_m]/[name_m]Pip[/name_m]
[name_m]Rafferty[/name_m]/[name_u]Rafe[/name_u]
[name_m]Sebastian[/name_m]/[name_m]Satch[/name_m]/Bash
[name_m]Theodore[/name_m]/[name_u]Teddy[/name_u]
[name_m]Thaddeus[/name_m]/[name_u]Teddy[/name_u]/Thax
[name_m]Whitman[/name_m]/[name_u]Whit[/name_u]
Girls:
[name_f]Beatrix[/name_f]/[name_f]Trixie[/name_f]/[name_f]Bea[/name_f]
[name_f]Clementine[/name_f]/[name_f]Cleo[/name_f]
[name_f]Dorothea[/name_f]/[name_f]Daisy[/name_f]
[name_f]Dorothy[/name_f]/[name_f]Daisy[/name_f]
[name_f]Frances[/name_f]/[name_f]Franny[/name_f]/[name_f]Francie[/name_f]
[name_f]Georgina[/name_f]/[name_u]Georgie[/name_u]
[name_f]Harriet[/name_f]/[name_f]Hattie[/name_f]
[name_f]Imogen[/name_f]/Idgie/[name_f]Ginny[/name_f]
[name_f]Louise[/name_f]/[name_f]Lulu[/name_f]
[name_f]Louisa[/name_f]/[name_f]Lulu[/name_f]/[name_f]Lola[/name_f]
[name_f]Olive[/name_f]/[name_f]Livy[/name_f]
[name_f]Penelope[/name_f]/[name_u]Penny[/name_u]
[name_f]Rosalind[/name_f]/[name_f]Rosie[/name_f]
[name_f]Susanna[/name_f]/[name_f]Sadie[/name_f]/[name_f]Sally[/name_f]/[name_u]Scout[/name_u]
[name_f]Hope[/name_f] this helps. 
[name_f]Isabella[/name_f] feels way too common next to [name_f]Millicent[/name_f]. [name_m]Thomas[/name_m] is also more common but the difference wouldn’t bug me as much for a boy name which are usually more traditional. I like [name_m]Thomas[/name_m] a lot.
Girl suggestions
[name_f]Isadora[/name_f]
[name_f]Francesca[/name_f]
[name_f]Josephine[/name_f]
[name_f]Penelope[/name_f]
[name_f]Louisa[/name_f]
[name_f]Cecilia[/name_f]
[name_f]Millicent[/name_f] & [name_f]Delilah[/name_f]! [name_f]Mille[/name_f] & [name_f]DeeDee[/name_f]!
Warmest congratulations, @fivetoninemum,
[name_f]May[/name_f] I suggest:
[name_f]Millicent[/name_f] {and} [name_f]Adeline[/name_f]
[name_m]How[/name_m] about [name_f]Emeraude[/name_f] [name_f]Mary[/name_f] ?
[name_f]Millicent[/name_f] and…
[name_f]Winifred[/name_f] nn [name_f]Winnie[/name_f] or [name_u]Freddie[/name_u]
[name_f]Corisande[/name_f] nn [name_f]Cora[/name_f] or [name_f]Cori[/name_f]
[name_f]Evangeline[/name_f] nn [name_f]Eva[/name_f] or [name_f]Evie[/name_f]
[name_f]Isadora[/name_f] nn [name_u]Izzy[/name_u] or [name_u]Isa[/name_u] or [name_f]Dora[/name_f]
[name_f]Dorothea[/name_f] nn [name_f]Thea[/name_f] or [name_f]Dora[/name_f]
[name_f]Dorothy[/name_f] nn [name_f]Dora[/name_f] or [name_f]Dottie[/name_f]
[name_f]Theodosia[/name_f] nn [name_u]Theo[/name_u] or [name_f]Thea[/name_f]
[name_f]Theodora[/name_f] nn [name_u]Theo[/name_u] or [name_f]Thea[/name_f] or [name_f]Dora[/name_f]
[name_f]Carolina[/name_f] nn [name_f]Lina[/name_f] or [name_f]Carrie[/name_f]
[name_f]Annalise[/name_f] nn [name_f]Anna[/name_f] or [name_f]Annie[/name_f]
[name_f]Lucille[/name_f] nn [name_f]Lucy[/name_f] or [name_f]Lu[/name_f]
[name_f]Lucinda[/name_f] nn [name_f]Lucy[/name_f] or [name_f]Lu[/name_f]
[name_f]Susannah[/name_f] nn [name_f]Susie[/name_f] or [name_f]Annie[/name_f]
[name_f]Violet[/name_f] nn [name_f]Vi[/name_f] or [name_f]Lettie[/name_f]
[name_f]Millicent[/name_f] and…
[name_f]Cordelia[/name_f]
[name_f]Adelaide[/name_f]
[name_f]Hermione[/name_f]
[name_f]Odessa[/name_f]
[name_f]Eugenie[/name_f]
[name_f]Josephine[/name_f]
[name_f]Georgina[/name_f]
[name_f]Verity[/name_f]
[name_f]Jemima[/name_f]
[name_f]Harriet[/name_f]
[name_f]Theodora[/name_f] (but possibly can’t then use [name_m]Thomas[/name_m])
[name_f]Seraphina[/name_f]
[name_f]Cressida[/name_f]
[name_f]Millicent[/name_f] [name_f]Rose[/name_f] is lovely!!
Many have already been suggested…
[name_u]Meredith[/name_u] (nn [name_f]Edith[/name_f], [name_m]Eddie[/name_m]?)
[name_f]Adaline[/name_f] (nn [name_f]Della[/name_f])
[name_f]Gretchen[/name_f]
[name_f]Agatha[/name_f] (nn [name_f]Aggie[/name_f])
[name_f]Claudia[/name_f]
[name_f]Agnes[/name_f]
[name_f]Abigail[/name_f] (nn [name_u]Abbie[/name_u])
[name_m]Benjamin[/name_m] (nn [name_m]Benji[/name_m])
[name_m]Vincent[/name_m] (nn [name_m]Vince[/name_m])
[name_m]Walter[/name_m] (nn [name_m]Walt[/name_m])
[name_m]Timothy[/name_m] (nn [name_m]Tim[/name_m], [name_m]Timmy[/name_m])
[name_m]Leonard[/name_m] (nn [name_m]Leo[/name_m])
[name_m]Victor[/name_m] (nn [name_u]Vic[/name_u])
I love your daughters’ name! My first thought for a sister name was [name_f]Felicity[/name_f]. Other ideas:
[name_f]Virginia[/name_f] nn [name_f]Ginny[/name_f]
[name_f]Genevieve[/name_f] nn [name_f]Vivi[/name_f] or [name_f]Evie[/name_f]
[name_f]Annabel[/name_f] nn [name_f]Bella[/name_f]
[name_u]Eloise[/name_u] nn [name_f]Lulu[/name_f]
Jane
Adelaide
Sabrina
Vera
Corinna
Coletta
Josephine
Florence
Pauline
Jeanette
Sylvia
Teresa nn Tess
Brigitte nn Bridie
Gwendolyn
Audrey
Elizabeth nn Bess
Jacqueline
Personally, I wouldn’t use [name_f]Isabella[/name_f] with [name_f]Millicent[/name_f]. They’re both beautiful but just very different especially in popularity!
Girls:
[name_f]Isadora[/name_f]
[name_f]Isabeau[/name_f]
[name_f]Arabella[/name_f]
[name_f]Dorothy[/name_f]
[name_f]Blythe[/name_f]
[name_f]Nadine[/name_f]
[name_f]Josephine[/name_f]
[name_f]Polly[/name_f]
[name_f]Margaret[/name_f]
[name_f]Elsie[/name_f]
Boys
[name_m]Jack[/name_m]
[name_u]Dean[/name_u]
[name_m]Peter[/name_m]
[name_m]Harold[/name_m]
[name_m]Ross[/name_m]
[name_m]Robert[/name_m]
[name_u]Leland[/name_u]
[name_m]Archie[/name_m]
A previous poster mentioned [name_f]Annabel[/name_f]/[name_f]Annabelle[/name_f] and that strikes me as a great choice with sister [name_f]Millicent[/name_f]!
Others:
[name_f]Henrietta[/name_f] ([name_f]Hattie[/name_f], [name_f]Ria[/name_f]/[name_f]Rita[/name_f], [name_f]Etta[/name_f])
[name_f]Beatrice[/name_f] ([name_f]Bea[/name_f])
[name_f]Dorothy[/name_f] ([name_f]Dora[/name_f])
[name_f]Prudence[/name_f] ([name_f]Prue[/name_f])
[name_f]Jemima[/name_f] ([name_u]Jem[/name_u], [name_f]Gemma[/name_f])
[name_f]Francesca[/name_f] ([name_u]Fran[/name_u], [name_f]Franny[/name_f]/[name_u]Frannie[/name_u], [name_u]Frankie[/name_u], [name_f]Frances[/name_f])
[name_f]Cornelia[/name_f] ([name_f]Nell[/name_f], [name_u]Nelly[/name_u]/[name_f]Nellie[/name_f], [name_f]Cori[/name_f]/[name_u]Cory[/name_u]/[name_f]Corie[/name_f],)
[name_f]Josephine[/name_f] ([name_u]Josie[/name_u], Jonesie)
[name_f]Tallulah[/name_f]/[name_f]Tallula[/name_f] ([name_f]Tula[/name_f], [name_f]Lula[/name_f], [name_f]Lulu[/name_f])
[name_f]Virginia[/name_f] ([name_f]Vivi[/name_f], Viri, [name_f]Ginger[/name_f], [name_f]Genie[/name_f])
[name_f]Constance[/name_f] ([name_u]Connie[/name_u])
[name_f]Winifred[/name_f] ([name_f]Winnie[/name_f], [name_f]Wendy[/name_f], [name_u]Freddie[/name_u])
[name_f]Agatha[/name_f] ([name_f]Aggie[/name_f])
[name_f]Euphemia[/name_f] ([name_f]Effie[/name_f])
[name_f]Florence[/name_f] ([name_f]Flora[/name_f], [name_f]Flossie[/name_f])
[name_f]Clementine[/name_f] ([name_f]Clea[/name_f]/[name_f]Cleo[/name_f], [name_u]Clem[/name_u]/[name_u]Clemmie[/name_u], [name_u]Connie[/name_u])
[name_f]Georgia[/name_f]/[name_f]Georgiana[/name_f] ([name_u]Georgie[/name_u])
[name_f]Louisa[/name_f] ([name_u]Lou[/name_u], [name_m]Louie[/name_m], [name_f]Lulu[/name_f], [name_f]Louise[/name_f], [name_f]Lilou[/name_f])
[name_f]Tabitha[/name_f] ([name_f]Tabby[/name_f]/[name_f]Tabbie[/name_f])
[name_f]Isadora[/name_f] ([name_u]Izzy[/name_u]/[name_f]Izzie[/name_f], [name_f]Dora[/name_f])
[name_f]Penelope[/name_f] ([name_u]Penny[/name_u]/[name_u]Pennie[/name_u], [name_f]Nell[/name_f], [name_u]Nelly[/name_u]/[name_f]Nellie[/name_f], [name_f]Polly[/name_f], [name_f]Posie[/name_f])
I’m so sorry for the late reply! I went away for work and wasn’t able to / forgot to check back. I am now so excited to see all the great responses!! I will go through and comment more but some stand outs so far were [name_f]Annabelle[/name_f] (but is this also too similar to [name_f]Isabella[/name_f] and face similar mismatch?). I also like [name_f]Florence[/name_f] nn. [name_f]Floss[/name_f], and many others too. Girls are hard to choose!
[name_f]Glad[/name_f] people think [name_m]Tom[/name_m] might work, but appreciate the boy suggestions too.
Thank you. I do love a double L! I love [name_f]Camille[/name_f] / [name_f]Camilla[/name_f] but worry in some circles may also let to nickname [name_f]Millie[/name_f].
[name_f]Annabelle[/name_f] and [name_f]Lucille[/name_f] are my favs from your suggestions 
Thank you. I do love a double L! I love [name_f]Camille[/name_f] / [name_f]Camilla[/name_f] but worry in some circles may also let to nickname [name_f]Millie[/name_f].
[name_f]Annabelle[/name_f] and [name_f]Florence[/name_f] and [name_f]Edith[/name_f] are my favs from your suggestions 
I love [name_f]Emmeline[/name_f] but worry about the different pronouniation possibilities.
Adding this to the list! Not sure about nickname of [name_f]Addy[/name_f] though…
Thanks for the suggestions! My husband loves [name_f]Georgina[/name_f], that’s his number 1 pick!, but I work with someone of the same name so it’s a bit tainted for me. We both love [name_f]Harriet[/name_f] so that’s now on the list
I like the idea of [name_f]Adeline[/name_f] with nickname [name_f]Della[/name_f]! Also [name_m]Vincent[/name_m] and [name_m]Walter[/name_m] are both on our list for boys so good to know you think they could work.
My husband wanted to go Calle [name_f]Millicent[/name_f] [name_f]Felicity[/name_f] at first so I’m sure he will like that suggestion! I like it too, with nn. fliss, but worry it may be a bit of a mismatch in eras?
Also love [name_f]Tess[/name_f] ”