Annie’s sibling is called...

[Houserenoqueen]

....any ideas? Not sure if we are having a boy or girl.

I like vintage-y names for girls. A couple of names I like (none of which really fall into that category): Heidi, Matilda (maybe too popular?), Robyn.

For boys, I have no idea!

I like names that are not overly popular and work well as baby names but are also strong adult names.

Any suggestions? Thank you!

Polly
Dulcie
Lucy
Joy
Rosa

Martha,
Jessica

Harry
Thomas
Charlie

Heidi
Carson

Toby

Jessica.

Ronald, Benjamin

Claribelle

Maude

Ray

Josie
Emily
Catherine
Elizabeth

Henry
Matthew
Joshua
David

Eden
Clarissa
Dora
Emma
Jocelyn
Hattie (Harriet)
Melody
Nell

Thomas
Bertie

My youngest is an Annie & her older sisters are Charlotte & Lauren. Boys names would have been Rory or Alfie

Sarah

Aiistair

I'd look for another vintage/retro name that doesn't end in a "ee" sound - (a bit samey with Annie) so:

Nell (alone or for Helena?)
May (alone or for Maria?)
Cora
Freda
Lillian
Evelyn (too popular?)
Iris (ditto?)
Clara
Louisa
Lydia

Robert
John
Hugh
Eric
Edgar
Edmund
Wilfred
Alfred (too popular?)
Frederick (ditto?)

For a boy, I'd go for very traditional, but not fashionable, like Robert, Peter or John. For a girl, Celia or Honor.

Annie and
James (Popular but classic)
Peter
Tom
John

Mabel
Lois
Pearl
Sarah
Martha
Rosa

Frances
Tallulah (Tully)
Pearl
Dorothy (Dottie)
Daphne
Betty
Eliza
Norma
Nell
Tess (Teresa)
Jessica
Jemima
Imogen
Molly

Monty
Jethro
Saul
Harold
Norman
Laurence/Laurie
Peter
Giles
Rex
Otis
Spencer
Hugo
Vincent/Vinnie
Frederick/Freddie
Francis/Frankie
Tom (Thomas)
Otto
Jesse

Gene

Josephine

Violet

Halle

Gwenna

I immediately thought Tess but that may be due to This is us

Eliza

Florence
Evie
Margaret

Ursula
Phoebe
Imogen
Jemima
Rowena

Charlie
Craig
Edward
Joshua
Timothy

Annie Victoria was on our shortlist.

The other names on our shortlist were:
Grace Harriet
Isabella Alice
Lucy Alexandra
Matilda Mary

James William
Patrick Alexander
Alexander John
Samuel James