Name Help is a series at Appellation Mountain. Every week, we discuss reader’s name questions, usually on Tuesdays and Fridays. We’re relying on thoughtful comments from the community to help expectant parents narrow down their name decisions. Thank you in advance for sharing your insight! To have your question considered, email appmtn (at) gmail. Looking for your own private #namehelp post? Order one here.

THEY FOUND THE PERFECT NAME FOR THEIR FIRST DAUGHTER

Kaycie writes:

My husband and I agree on lots of things, but somehow names aren’t one of them! He has a very traditional, popular in every year, kind of name. I have this super trendy, very 1990s name. For our kids, I want names that are a little bit different, but not made up, and hopefully not too trendy.

I’d always wanted to name a daughter Margot, but when our daughter was born two years ago, it felt like that was The Name every one we knew was using. My husband liked Ava, but I just didn’t want a Top Ten name. I pivoted and found Cleo on a list of girl names ending with O. I like the way it actually was popular in the early 1900s, and I don’t mind that it’s a little more popular again now.

Her middle name is Elizabeth, because I did worry just a little that Cleo might be a little bit much, but so far everyone loves her name and it really fits her personality.

For a boy, I liked Caspian, Rhodes, or Raphael/Rafe.

But we’re having another girl, and I don’t know what goes with Cleo. My husband still likes Ava, but I feel like we hear it all the time. The only name I keep coming back to is Noemi, but my niece and nephew are Noah and Emma, so that’s another name we really can’t use.

Please read on for my response and leave your thoughtful suggestions in the comments.

baby girl wearing headband wrapped in blanket sleeping on shaggy rug; sister for Cleo
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NAMING A SISTER FOR CLEO

Abby replies:

Congratulations on your new daughter!

As it happens, I have a Clio – so this list was extra-fun for me to think through.

It sounds like we need to match Cleo’s energy in a few different ways:

  • A sister for Cleo has to share that unexpected feeling.
  • And yet, her name should be at least a little bit familiar – vintage, rather than freshly invented.
  • There’s a certain high energy to Cleo, partly because of that O ending. We need something that matches that vibrant, upbeat sound.

While that list sounds specific, we could still go lots of different directions. I’m guessing you’d probably prefer to stick with a nickname-proof name – but I don’t think that’s necessarily a rule.

Let’s look at some options.

WHAT GOES WITH CLEO?

AFTON

The name of a river in Scotland, a Robert Burns poem, and a name that’s been used in small numbers over the years, too, Afton is complete and distinctive.

DINAH

I think Dinah has the same vintage, surprising energy as Cleo. They’re sisters in 1919 … or in 2026.

GOLDIE

There’s a shimmer to Goldie that reminds me so strongly of Cleo. Both names were popular in the early 1900s, too, making them sound even more like sisters.

JOVIE

Strictly speaking, Jovie is a a newer name. But it comes from Jove, another name for Jupiter from Roman mythology. It means cheerful, from our word jovial. (That’s because we once believed that anyone born under the sign of Jupiter was destined to be happy.)

LUELLA

Vintage and sparky, Luella started out as a variant of any of the Lou- names. It sounds fresher than Isabella, more upbeat than classic Louise. This is the one name on the list that might shorten – to Lulu or Lula. Of course, Lula might also be a great sister for Cleo, too.

ROMY

Okay, it’s on the list partially because it’s always been my favorite name if I were naming my Clio’s sister. But Romy also has history. It’s a contracted form of Rosemary or Rosemarie. Midcentury European actress Romy Schneider makes this name every bit as glam as Ava.

VEDA

You might also spell it Vida, Vita, or Veta. This particular spelling tends to be associated with a Sanskrit word meaning knowledge, while Vita is from the Latin word for life. I think they all work, though, and Veda had a good run during the late 19th and early 20th centuries, making it a vintage sister for Cleo.

ZORA

On paper, it’s a Slavic name meaning dawn. In practice, it sounds a lot like current favorites Nora, Cora, and Aurora. Any Z name feels a little more interesting. I think Zora stands up nicely to Cleo’s cool, edgy sound, while still being different enough. While Zora ranks in the current US Top 1000, just like Cleo, it’s less common. And while Zora might be misheard as Zara (or Nora or Cora), I think it’s likely to wear every bit as well as Cleo.

I think my favorite for you is Zora, particularly balanced with another classic middle. Zora Katherine, maybe? I do also really like the sound of Dinah. Cleo Elizabeth and Dinah Louise, maybe?

Readers, over to you! What would you name a sister for Cleo Elizabeth?

About Abby Sandel

Whether you're naming a baby, or just all about names, you've come to the right place! Appellation Mountain is a haven for lovers of obscure gems and enduring classics alike.

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What do you think?

28 Comments

  1. Flavia Mavis Fern Simone Petra Sally Avonlea Neve Lavinia Ramona Laurel Valerie Arrietty Harriet Anita Lyra Frances Moira Etta Oriana Edie Greta Lumi Marion Rita Amelie Soleil
    Best of luck and keep us posted!โค๏ธ

  2. Cleo & Daphne
    Cleo & Phoebe
    Cleo & Mavis
    Cleo & Flora
    Cleo & Willa
    Cleo & Tessa
    Cleo & Rhea
    Cleo & Zelda
    Cleo & Sylvie
    Cleo & Sylvia

  3. Congratulations on your second daughter coming soon! Cleo Elizabeth is a beautiful name. It can be tricky to find the compromise that your and your husband both love but it sounds like there are lots of great ideas coming together here!

    I tried to look at more traditional names that are known but still more unique. I agree that you could match the upbeat/spunky Cleo nature or you could balance it with something softer and subtle. How about:

    Other names with O:
    Cleo & Olive
    Cleo & Cora
    Cleo & Gloria (shares meaning of glory with Cleo)
    Cleo & Zoe

    Names like Ava:
    Cleo & Thea
    Cleo & Ida
    Cleo & Ivy
    Cleo & Gemma

    Names that could be spunky and soft:
    Cleo & Hazel (I know a very spunky Hazel!)
    Cleo & Celeste
    Cleo & Esme
    Cleo & Freya
    Cleo & Betty
    Cleo & Agnes

    I love the middle name of Elizabeth – something longer, feminine and classic.

    All the best with naming decisions! ๐Ÿ™‚

  4. Fia or Isla. Fia Margaret or Isla Margot, if she still likes Margot. Ida, June, or Claudia are other ideas.

  5. I absolutely love Afton. Itโ€™s a beautiful name, unique yet still known. Cleo and Afton sound like sisters to me. And it starts with an A, like your husbandโ€™s favorite name, Ava.

    And thinking of Ava, here are some other somewhat similar names that I think go well with Cleo.

    -Avalon
    -Elsa
    -Eva
    -Ida
    -Ivy
    -Kyra
    -Nola
    -Nova
    -Ziva