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.

May is a sweet old-fashioned name that hasn't been on the national charts in several decades, but is definitely sounding fresh and springlike. Parents are beginning to see it once more as one of the prettiest middle name options. May was as high on the list as Number 57 in the 1880s; it's now 228 on Nameberry.

Albert has acquired a new gloss as one of the top royal baby boy names, a considerable upgrade from its serious, studious image (think Einstein, Schweitzer).

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.

Phoenix is a New Age name symbolizing rebirth and immortality. It's also a place name, a color name, a mythological name, AND an animal name, combining several of today's hottest trends in one appealing package.

Associated with the first light of the day, and more figuratively with new beginnings and fresh starts, Dawn's heyday came in the 1960s and 70s in the US, Canada and the UK. It had been in the charts since around the end of the First World War but really began to take off in the 1950s.

Lucius is an old Roman clan name that has lots of religious and literary resonance, yet is still vital today. It was the name of three popes, appears in several Shakespeare plays, and, like all the names beginning with 'luc' relates to the Latin word for light.It was one of a limited number of forenames used in ancient Rome, and because of its meaning was often given to boys born at dawn.

Sunniva was an Irish-born saint who fled to Norway, where she hid in an island cave with her followers and eventually died. After miracles were reported on the island, the cave was excavated and Sunniva's intact body was found. Sunniva is the patron saint of Western Norway. Her name would make a fascinating and unusual choice for a modern baby girl, and if her story is a bit grim, you can take refuge in the upbeat nickname Sunny or Sunni.

Megan originally evolved from Meg, which itself derived as a nickname for Margaret. Margaret ultimately comes from the Greek word margarites, meaning "pearl." Megan is no longer a common nickname for Margaret—it is most often used as a full name. Other spellings include Meghan, Meagan, Megyn, and Meaghan.

Helen is a name that has connoted beauty since ancient times – Helen of Troy was the the mythological "face that launched a thousand ships," over whom the ten-year Trojan War was fought.

A pretty, if unusual choice for a summer baby, particularly a girl with an ancestor named Ida. An epithet of the goddess Aphrodite, Idalia is derived from the Greek place name Idalion.

The Scottish Eileen was a midcentury darling that was on a long downward slide for decades. And then, in 2012, it took an unexpected pivot and has been inching upward in the US. The unrelated but similar-sounding Isla may have revived the taste for Eileen. Isla along with Lee and Lena might be nicknames for Eileen. Eileen is an Anglicized form of the Gaelic Eibhlin or Aibhilin, which is technically a form of to Evelyn/Aveline, but is also sometimes considered part of the Helen family of names. Aileen is the Irish version, less popular now than Eileen.

A favorite back in the 70s and 80s when it ranked in the US Top 30, April has since been overtaken by the likes of June, May, August, and Winter. Nevertheless, it still holds appeal as a pretty-but-no-frills option, associated with the coming of Spring in the Northern Hemisphere and of the arrival of Autumn in the South.

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.

Chiara is a lovely and romantic Italian name that's familiar but not widely used here: a real winner. You might consider Chiara instead of Claire, Clara, Cara, or even Keira.

Holly ranks just in British Top 50, but it's been out of favor here since the 1970s Era of Nickname Names. Still, the name may be on her way back as a rejuvenated nature pick.

Oriana is a dashing medieval name, with a meaning similar to Aurora. At this point, though, Oriana is much more unusual than Aurora and makes a unique choice if you're searching for names that mean new beginnings or dawn.

Asha is an Indian name that comes from the Sanskrit word for hope or desire, but it is also a Swahili name derived from Aisha, meaning life. Since the ascendance of Ashley through the 1980s and 90s, all baby names Ash-related have been used in the U.S. for both girls and boys, from Ashlyn to Ashby, Ashton to Asher. Despite its separate roots, Asha is part of this group.

Effortlessly cool with a hint of the mystical, Phoenix rolls a lot of trends into one: it's a place-name and a bird name, it ends in the stylish letter x, it's got in-built nicknames, and it's unisex too. Familiar but not over-popular, Phoenix ranks in the US and UK Top 1000s.

Marguerite is a classic French name with a remnant of old-fashioned Gallic charm; and is also a variety of daisy. Chic again in Paris, it's definitely ripe for revival here.