Callahan, the simpler spelling of Callaghan, is a rhythmic jig of a name whose history harks back to the ancient King of Munster. In the Dirty Harry movies, the Clint Eastwood character is Harry Callahan.

Clark seemed to have been Gone with the Wind, but parents looking for a short, strong boy's name are now beginning to appreciate its cool combination of Gable charm with Superman power.

Both offbeat and upbeat, this evocative traditional Irish name that runs through Celtic mythology is known here via award-winning novelist Cormac McCarthy (born Charles). The author's adopted name is related to Cormac Mac Airt, one of the great legendary high kings of Ireland.

A handsome Irish name for boys, very popular in that country, but in the US this traditional spelling might cause pronunciation problems. Still, whether Cian or Kian, it's simple and straightforward enough for the initiated. Cian is rising in the British popularity charts.

Casey is a name with a big wide grin, Irish, friendly, and open, and associated with several American folk heroes--Casey Jones, the engine driver of the Cannonball Express who gave his life to save his passengers, and the legendary Casey at the Bat.

Chase, with its sleek and ultraprosperous aura, is redolent of the worlds of high finance and international banking. Chase has been well used during the last few decades, seen as a character on 24 and on several young-audience shows.

Clement, the name of fourteen popes and several saints, has a pleasantly, positive, slightly antiquated feel, like the phrase "clement weather."

Colton is a trendy two-syllable choice, with the popular 'on/en' ending.

Corbin, the name of the castle where the Holy Grail was said to be hidden, came to the fore in the 1980s via actor Corbin Bernsen when he was the high profile star of LA Law, but its use is only now escalating as part of the mania for two-syllable names starting with c or k, as well as from the more youthful image of Corbin Bleu, the attractive actor-model-dancer-singer who was one of the stars of the Disney hit High School Musical.

The name of the guardian angel in It's a Wonderful Life is rarely heard the rest of the year because of its studious, near-nerdy image, but this could change in the current naming climate.

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.

Camden is a surprise hit, probably as a result of some star baby cred: it has been chosen by no less than four celebrity parents since 2012. Gentle but not flimsy, Camden could be an updated spin on Cameron, Callum, or Caden.

Cal is a nickname style name that feels as friendly and calm as it does cool and breezy. While its longer forms have proved more popular over the years, Cal as a stand alone has dropped on and off of the US Top 1000 since the 1880s.

With the popular 'ash' sound and a contemporary feel, Cash is a widely used name in the US. Used occasionally before the 2000s, Cash really took off in 2003, following the death of American musical legend, Johnny Cash.

Strong and modern, Cade shot up the popularity lists around the millennium—it was as high as Number 201 in 2001. Now, it has declined in popularity slightly, but nevertheless remains in the US Top 300, given to around 1200 babies each year. Combined with all the baby Kades, Cadens, Kaidens and Kaydens however, it might feel even more popular that it actually is.

A British-accented Greek name with an intellectual image that has been off the U.S. charts since 1966, but was a Top 300 name at the turn of the last century. We have the feeling Cyril's ready for a comeback.

Crew is yet another word name that was added to the baby name lexicon when this one was chosen by The Young and the Restless star Joshua Morrow for his son. It debuted on the Top 1000 in 2010. We've also heard spelling variations Cru and Crue.

Carter has ranked in the Top 100 since the the turn of the millennium, but despite its recent popularity, it's not a trendy new name. In fact, Carter is one of those names that just misses ranking in the US Top 1000 for its entire 140+ year history.

Carson is one of the most long-running popular androgynous baby names, with a dash of the Wild West via the legendary Missouri frontiersman Kit Carson. Dating back to when it was the name of Nancy Drew's Dad, Carson is still steadily in the Top 200 baby names.

A cool, rugged sounding name, Calder is connected to an ancient Scottish clan, an English village, and a Scottish River, along with the sculptor Alexander Calder, who invented the mobile (as in, kinetic sculptures powered by motors or air). Meaning "rocky water" or "stony river" in the ancient Brittonic language, it makes a creative yet outdoorsy choice.