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.

Even though in the past Clyde may have been identified as half of the infamous outlaw duo with partner Bonnie Parker—especially after the 1967 movie in which he was played by Warren Beatty—Clyde has always had an element of jazzy cool that could overcome all the rest.

This anglicized form of the Irish surname Ó Cathaláin links back to the Irish given name, Cathal. Similar to Callum, Caleb, and Calvin, it might feel more usable outside of Ireland and Scotland than its origin name.

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.

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.

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

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.

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.

Cole -- a short name that embodies a lot of richness and depth -- has long been associated with the great songwriter Cole Porter. It's quite popular in Scotland.

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.

Combining the sounds of Colton and Toby, Colby has been in the US Top 1000 since the 70s. It peaked in 2021, entering the Top 100 thanks to Colby Davidson's appearance on reality TV show, Survivor that same year. Currently on the rise in the UK, in the US, its popularity has been shaky, dipping one year, rising the next. Given to around 490 boys in 2024, it is also chosen for around 50 girls each year.

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.

The seventh most common surname in Scotland, once associated only with soup, is now being considered as a last-name-first choice, accessible but unusual.

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.

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.

For a single-syllable Latino surname, this new popular kid on the block packs a lot of energy and charm and is one of the most stylish Spanish names for boys in general use today. Victoria and David Beckham named their third son Cruz, following Brooklyn and Romeo, and it was also picked up on by tennis star Lleyton Hewitt for his son. Other parents may prize its Christian associations.

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.

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.

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

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.