Agatha Christie's Poirot

Once a powerful Roman clan name, Cecil has lost much of its potency over the years, though it retains a strong presence in the sports and jazz worlds. Past bearers include film giant Cecil B. DeMille, poet Cecil Day Lewis, father of Daniel, and photographer Cecil Beaton. Fictional Cecils appear in Oscar Wilde's play, Lady Windemere's Fan, E. M. Foster's A Room With a View and the film Lee Daniel's The Butler.

Cecilia is a lovely classic name deservedly enjoying a new turn in the sun. Always among the Top 500 girls' names in the US, Cecilia is now at its highest point ever.

Celestine is a pretty, crystalline extension (actually a diminutive) of Celeste that would make a choice that is both delicate and strong. It is also a popular name in France.

Celia, splendidly sleek and feminine, is a name that was scattered throughout Shakespeare and other Elizabethan literature, but still manages to feel totally modern.

Chandra is the name of the Hindu moon goddess last groovy when incense and meditation were hot new concepts but a new possibility with the resurgence of astrology and other non-Western spiritual beliefs.

Charles derives from the Germanic name Karl, meaning "man" or "free man", and is a royal name in multiple European countries. A famous early bearer is Charlemagne, King of the Franks and Lombards and then Roman Emperor in the 8th-9th centuries.

Charlotte, the name of the young Princess of Cambridge, is the latest classic name to join Sophia, Emma, Olivia, and Isabella at the top of the popularity list. It is now among the most popular girl names in many English-speaking and European countries.

Christina, a pretty and feminine, crystal clear classic, may be trending downward, but it's never out of style. Christina's short forms Chris, Christie, and Tina all seem dated—making the royal Christina best used in its full glory.

Christine was the dominant feminine variation of Christopher forty or fifty years ago, when French E-endings were preferred over As; it was a Top 20 name for several years, from 1966 to 1974. But though it still hangs in on the popularity list, today most any other version would be considered more stylish, from Kristen to Kirsten to Christina herself.

Christopher derived from the Greek Christophoros, which is composed of the elements Christos, referring to Christ, and phero, meaning "to bear."

This frilly Victorian name is a variant of Cecilia and Cecily, with which it might well be confused. Cicely was a surprise choice for comedienne Sandra Bernhard.

Claude is a soft-spoken French name that conjures up the pastel colors of Monet and harmonies of Debussy. In France, it is used for girls as well, in fact in the Tracy Chevalier novel Lady and the Unicorn, the protagonist is a female Claude.

Claudia is a classic name with ancient Roman roots. Never truly in or truly out, Claudia feels like a strong, modern choice that hits the sweet spot between too popular and too unusual..

Coco came to prominence as the nickname of the legendary French designer Chanel (born Gabrielle) and has lately become a starbaby favorite, initially chosen by Courteney Cox for her daughter Coco Riley in 2004. At first it was the kind of name that the press loves to ridicule, but we predict Coco's heading for more broad acceptance and even popularity.

Thanks to its dashing Anglo-Irish image — due partly to Colins Firth and Farrell — and its C-initialed two-syllable sound, Colin and its cousin Collin have enjoyed a long run of popularity, reaching as high as Number 84 in 2004.

Concepcion dressed in red satin.

Connie is a sweet and charming vintage nickname, which ranks in the top 200 in the UK and has a vintage charm that makes it ready for a comeback in the US as well.

Cora is a lovely, old-fashioned girls' that has been recently rejuvenated by its contemporary-feeling simplicity. In fact, Cora seemed headed straight for the top of the popularity list when the coronavirus pandemic somewhat weakened its appeal.

In ancient Rome, Cornelia was considered the paragon of womanly virtue, making it a handsome name with an excellent pedigree. It's rare today, so if you want a name no one else is using, somewhat reminiscent of Amelia and the Shakespearean Cordelia, Cornelia should be on your list. Cornelia's short forms might include Cora, Nelia or Nell--anything but Corny.