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I definitely don’t see [name]Helen[/name] and [name]Iris[/name] as old lady names. They are gorgeous together.
Hm, greek mythology + “old lady”… I think of [name]Helen[/name], [name]Iris[/name], and [name]Daphne[/name]. And it doesn’t end with an ‘a’! It’s somewhat floral, though not as much as [name]Iris[/name], and it’s between [name]Iris[/name] and [name]Helena[/name] in popularity for a happy medium. WDYT?
[name]Helen[/name] and [name]Iris[/name] are pretty! [name]Adelaide[/name], [name]Margaret[/name] and [name]Ruth[/name] share the same vintage charm. Here are some other suggestions.
[name]Daphne[/name]
[name]Evangeline[/name]
[name]Sylvia[/name]
[name]Frances[/name]
[name]Georgia[/name]
[name]Phoebe[/name]
[name]Alice[/name]
[name]Mabel[/name]
[name]Matilda[/name]
[name]Beatrice[/name]/[name]Beatrix[/name]
[name]Cecily[/name]/[name]Cecilia[/name]/[name]Celia[/name]
[name]Winifred[/name]
[name]Cordelia[/name]
[name]Willa[/name]
[name]Antonia[/name]
[name]Martha[/name]
[name]Clara[/name]
[name]Josephine[/name]
[name]Lavinia[/name]
[name]Sybil[/name]
[name]Diana[/name]
[name]Flora[/name]
I would go with another Greek name. I think [name]Athena[/name] would be marvelous! [name]Athena[/name] [name]Genevieve[/name] would be GREAT with [name]Helen[/name] [name]Odette[/name] and [name]Iris[/name] [name]Elisabeth[/name]!
[name]Ariadne[/name]
[name]Ione[/name]
[name]Chloe[/name]
[name]Daphne[/name]
[name]Irene[/name] / [name]Eirene[/name]
[name]Evanthe[/name]
[name]Charis[/name]
Thanks! We had considered [name]Daphne[/name], but felt we liked [name]Chloe[/name] better, but then didn’t want to use [name]Chloe[/name] because it is SO popular… I grew up with a top 10 name and I still wish I had been named differently, maybe we could toss [name]Daphne[/name] around more. We have brought up [name]Athena[/name] numerous times but wondered if because she was a well-known goddess it would be too blatantly mythological.
Thank you again!
[name]How[/name] about [name]Phoebe[/name]? She is similar in feel to [name]Chloe[/name] but not nearly as popular and she has Greek mythology roots.
It doesn’t fit into the “old lady” category and it [name]MAY[/name] get more popular this year, but I think [name]Penelope[/name] is such a gorgeous name. And you could middle name her [name]Ruth[/name] or something to tie in your more vintage style 
[name]Penelope[/name] [name]Ruth[/name]… definitely sweet, but would it work for you?
[name]Ah[/name], I was going to recommend [name]Phoebe[/name] - also [name]Doris[/name], [name]Dione[/name], [name]Clio[/name]. [name]Love[/name] [name]Ruth[/name], btw.
Wow I love [name]Helen[/name] and [name]Iris[/name] together! [name]Just[/name] wanted to second [name]Phoebe[/name] and [name]Penelope[/name], I think either one would be fabulous with their big sisters Or perhaps [name]Selene[/name]?
It does in fact mean ugly in French, and in sort of a gross way… not just conventional ugliness.
What about [name]Ariane[/name]?
[name]Calliope[/name] (Greek Myth) + [name]May[/name] (Old lady)
[name]Isolde[/name] (Greek Myth) + [name]Louise[/name] (Old lady)
[name]Minerva[/name] (Greek Myth) + [name]Pearl[/name] (Old lady)
Greek mythology names are a great category! Some ideas for you…
[name]Apolline[/name] – similar to [name]Adelaide[/name] but with much better sound/meaning
[name]Calliope[/name] – similar to [name]Chloe[/name] but not so popular, nn could be [name]Callie[/name] or [name]Calla[/name], means “beautiful voice”
[name]Clio[/name] – classic sweet Greek mythology name
[name]Demeter[/name] – I know a little girl with this name, nn [name]Demy[/name]
[name]Evadne[/name] – pretty sounding name with possible nn [name]Eva[/name]
[name]Persephone[/name] – long yes, but so pretty, possible nn [name]Penny[/name] or Persy
[name]Selene[/name] – pretty meaning “moon”
[name]Sybil[/name] – one of my favorites, goes well with your other daughter’s names
And finally, for more ideas, here is a big list of Greek Mythology names for girls: Nickelodeon Parents | Printables, coloring pages, recipes, crafts, and more from your child’s favorite Nickelodeon and Nick Jr. shows.
I love [name]Phoebe[/name] and [name]Daphne[/name] with [name]Helen[/name] and [name]Iris[/name]!
Ooh great work [name]Lori[/name], I think [name]Phoebe[/name] is the PERFECT sibling for [name]Helen[/name] and [name]Iris[/name]!
[name]Helen[/name], [name]Iris[/name], & [name]Harriet[/name] ([name]Hattie[/name])
[name]Helen[/name], [name]Iris[/name], & [name]Penelope[/name] ([name]Penny[/name] or [name]Ellie[/name])
[name]Helen[/name], [name]Iris[/name], & [name]Stella[/name]
[name]Helen[/name], [name]Iris[/name], & [name]Athena[/name] ([name]Annie[/name])
[name]Helen[/name], [name]Iris[/name], & [name]Francine[/name] ([name]Frankie[/name])
Whoops, sorry kyemsma, I see you suggested [name]Phoebe[/name] first! A fabulous addition to [name]Helen[/name] and [name]Iris[/name].
[name]Helen[/name] & [name]Iris[/name] & Achlys (ak-liss)
[name]Helen[/name] & [name]Iris[/name] & Aiode
[name]Helen[/name] & [name]Iris[/name] & [name]Ariadne[/name] (nn. [name]Aria[/name])
[name]Helen[/name] & [name]Iris[/name] & [name]Athene[/name] (variation of [name]Athena[/name])
[name]Helen[/name] & [name]Iris[/name] & [name]Callisto[/name]
[name]Helen[/name] & [name]Iris[/name] & [name]Daphne[/name] (Initials spell HID)
Helen & Iris & Doris* (HID)
[name]Helen[/name] & [name]Iris[/name] & [name]Irene[/name]* (too close to [name]Iris[/name] or [name]Helen[/name])
[name]Helen[/name] & [name]Iris[/name] & Medusa* (Initials: HIM)
[name]Helen[/name] & [name]Iris[/name] & Melete* (HIM)
[name]Helen[/name] & [name]Iris[/name] & [name]Melissa[/name] (HIM)
[name]Helen[/name] & [name]Iris[/name] & [name]Nephele[/name]
[name]Helen[/name] & [name]Iris[/name] & [name]Nike[/name]*
[name]Helen[/name] & [name]Iris[/name] & [name]Penelope[/name]* (HIP)
[name]Helen[/name] & [name]Iris[/name] & [name]Phoebe[/name] (HIP)
[name]Helen[/name] & [name]Iris[/name] & [name]Selene[/name]* (Initials: HIS)
What I noticed about [name]Helen[/name] & [name]Iris[/name] are repeating vowels and that they both alternate between vowels & consonants. The names with asterisks next to them alternate between vowels & consonants.
[name]Penelope[/name] is marvelous. [name]How[/name] do you feel about [name]Thalia[/name]?
[name]Love[/name] [name]Helen[/name] and [name]Iris[/name] together and my initial thought was [name]Juno[/name], but this breaks your alphabet rule!
[name]Grace[/name] is a good match, love previous suggestion of [name]Ariadne[/name].