England, Ireland, Scotland, Wales

This undiscovered unisex name has lots of flair. It was first noticed as a girl's name, starting in the 1980's, on the long-running daytime drama Search for Tomorrow, with the character Adair McCleary, who had ahead-of-their-time brothers named brothers Hogan, Cagney and Quinn. But since Adair has yet to find many takers, it would make a fresh and appealing choice.

Alfred is up off his recliner! If you're looking for a path to Fred, you can go directly to Frederick or take the long way around with the so-out-it's-in-again Alfred. Alfred is quite popular in several European countries, especially England and Wales, Norway, Sweden, and Denmark.

A pretty, dainty name for one of the little characters in the children's book series The Borrowers. It was the basis for a later Studio Ghible animated film, The Secret World of Arrietty. While the connection to Harriet is tenuous, you might want to consider Arrietty as an honorific for an ancestral Harriet, Harry, or even Henry or Henrietta.

Blair with a little something extra, though that's hardly needed.

The unisex Blake, which indeed has two conflicting meanings, has a briskly efficient image when used for a girl.

Brooke has long projected an aura of sleek sophistication, and can also be seen as a stylish water name.

Extreme makeover: Brooklyn has gone from jokey Borough Boy name in the 1990s to a leading girls' name starting with B. The status of New York's Brooklyn as hipster heaven is ironic as few bona fide Brooklyn hipsters would choose this name.

Connor, the appealing name of an early semi-legendary king of Ulster in Irish mythology, sits firmly in the Top 100 and taken together with its alternate spellings would rank even higher. In its native Ireland the Conor version is one of the highest charting boys’ name.

A Scottish favorite that could make it here thanks to its similarity to the word divine. It's the most popular of several feminizations of David used in Scotland, including Davida, Davinia and Davidina, which have less of a chance in the U.S. It reentered the US Top 1000 for the first time in two decades in 2016.

Evanna is the name of a Harry Potter actress who pronounces it ee-vah-na. This might be considered yet another international feminine form of the many variations of John; Ivana, Giovanna, and even Joan are cousins of Evanna.

Finn is a name with enormous energy and charm, that of the greatest hero of Irish mythology, Finn MacCool (aka Fionn mac Cuumhaill), an intrepid warrior with mystical supernatural powers, noted as well for his wisdom and generosity.

Fiona entered the American consciousness with the opening of the 1954 Broadway musical Brigadoon, but didn't come onto the U.S. popularity list until 1990.

Grayson, which you might think of as a Jason-Mason substitute, has been rising through the US Top 1000 since 1984 and has ranked in the Top 100 since 2011.

Kathleen is the early Irish import version that came between Katherine and Kaitlin, and which hasn't been used in so long it's almost beginning to sound fresh again. It was a surprise pick by one of the hip Dixie Chicks, Martie Maguire. Kathleen was a Top 10 name from 1948 to 1951, and it is the subject of several old sentimental songs, such as "I'll Take You Home Again, Kathleen."

Maeve is a short and sweet name that has become one of the most stylish Irish names for girls in the modern US. Maeve would make an excellent first or middle name choice, with more heft than Mae/May and more modern charm than Mavis.

Mackenzie begat McKenna - a catchy but very trendy choice. While the Mc or Mac prefix means "son of," this is much more popular as a girl name in the US, peaking at #177 in 2002.

Morgan has long been a traditional Welsh male name, a variant of the Old Welsh name Morcant, from the Welsh elements mor, meaning "sea" and cant, "circle." The female Morgan is unrelated to the male version—it is a name from Arthurian legend created for Morgan le Fay, King Arthur's half-sister and famed sorceress. Her name comes from Morgen, an Old Welsh name meaning "sea-born," and is related to the Irish name Muirgen.

Niamh, derived from the Old Irish Niam, is an ancient Irish name that was originally a term for a goddess. In Irish myth, one who bore it was Niamh of the Golden Hair, daughter of the sea god, who falls in love with Finn's son Oisin and takes him to the Land of Promise, where they stayed for three hundred years. Niamh can be Anglicized as Neve, Nieve, or Neave.

Piper is a bright, musical name that entered the list in 1999, one year after the debut of the TV series Charmed, which featured a Piper, and it's been a consistent riser since. Piper Kerman is the memoirist whose prison experiences provided the basis for the hit Netflix series Orange is the New Black.