For a long time, Isadora has been overlooked in favor of Isabella, owing perhaps to its association with the tragic modern dancer, Isadora Duncan, or because parents would rather their daughter be a Bella than a Dora. Now, with Theodora back in the charts and vintage names in vogue, Isadora has been slowly gaining more attention over the last decade.

Constance is one of the more subtle of the virtue baby names, but still has quite a prim and proper image. One impediment to its revival has been the decidedly dated nickname Connie, though modern parents might well opt for using the strong and dignified name in full.

Sounds like a child in a Gothic novel.

Probably too evangelical for mass importation.

Rare but attractive female form of Basil.

Popular with the Puritans, this name of the shrewd and beautiful wife of King David and mother of King Solomon could be a bit of a load for a modern girl to carry.

Somewhat unwieldy, but would certainly make your little girl feel wanted.

"Girls Gone Child" blogger Rebecca Woolf made Boheme a first name when she gave it to one of her twin daughters (the other one's name is Reverie). La Boheme -- "The Bohemian" -- is a Puccini opera that was transmogrified into the modern play Rent. Boheme means a literary or artistic person who lives outside conventional society.

Unusual floral name which would be perfect for a spring baby girl, if you can pronounce the Welsh double L correctly. It's a tricky sound for non-native Welsh speakers, kind of halfway between an H and an L.

Both Caitriona and Catriona are commonly heard in Scotland and Ireland. The name was brought to Ireland by the Anglo-Normans, and is the source of nicknames Cait, Caitin, Caitlin and Triona. Actress Caitrona Balfe has gained recognition for her role on Outlander. Pronunciation is like Katrina.

Another of the new Greek-accented Cal- names.

Caoimhe, pronounced (more properly) kwee-va or kee-va, is a pretty and distinctive Gaelic name but one that could well lead to no end of confusion outside the Irish community. Even in its native habitat, it is sometimes spelled Keeva.

Capucine was a chic French actress half a century ago and has been one of the most fashionable girl names in France in recent decades, ranking in France's Top 100. Capucine is also popular in French-speaking Belgium. To Americans and other English speakers, this name still feels fresh -- so fresh that last year, no baby girls were named Capucine in the US.

Cassiopeia, the name of a mythological mother who became a stellar constellation, is challenging but intriguing, and has all those softening Cass nicknames available. And with all names Cass-related trending, Cassiopeia may be an unusual route to a stylish name.

Cerelia is a melodic and unusual choice, perfect for a child born in April or May. Another version is Cerella.

Little known name of the goddess of the harvest — her name literally means nourishment, and is the origin of the word cereal. A possibility for the parent seeking something original, but with the aura of Roman myth. Her Greek counterpart is Demeter.

Popular name in Israel, worth considering for a dark-haired daughter with a bit of a bohemian cast.

One of the rarest of the flower names, that of the blossom celebrated in Japan as a symbol of the sun and a possible object of meditation. One of the rare flower names counted among names for autumn babies, Chrysanthemum is also one of the most unusual nature-themed girl names starting with C.

In Greek myth, Circe, daughter of Helios, the sun, was a sorceress living on the island of Aeaea, who could turn men into animals with her magic wand, which is just what she did to Odysseus's crew in Homer's Odyssey, transforming them into swine. All was forgiven, however, as Circe and Odysseus later had a child together—Telegonus.

One of the rarest of virtue names, Clemency could come back along with the more familiar Puritan virtue names such as Hope and Faith. It has a rhythmic three-syllable sound, and offers a more virtuous alternative to the more popular Clementine.