Since we wrote a book called Beyond Jennifer & Jason, Madison & Montana, encouraging parents to move beyond overused names, it's no secret what we think of this trendy surname name, inspired by a mermaid named Madison in the 1980s movie Splash.

Jenna was first noted on the 1980s TV series Dallas, later associated with one of the First Twin Daughters. Jenna is still being used, but no longer feels much fresher than Jennifer. You can also spell it Jena, but then many people will pronounce it jeen-a, as in Gina.

This jaunty Celtic surname -- the most common family name in both Ireland and the US -- is totally viable as a first. The arguably most famous Murphy is TV's Murphy Brown, and indeed the name is twice as common for baby girls as for baby boys today. But still, it's solidly gender neutral and works equally well for all sexes.

Morwenna is an ancient Cornish name now being revived in Wales, deriving from a Celtic word meaning "maiden", although the Mor- syllable means that it's often associated with the sea. It's been heard in the British series Doc Martin and Poldark. Morwenna Banks is a British actress.

Upbeat nickname-name that can't help but make you smile. You might want to use it as a short form for a more "serious" name such as Sunniva, but Sunny is undeniably, well, sunny.

It might be surprising to know that this name originated as a Scottish place and surname name, as in Washington Irving. It became a popular choice for first-generation Jewish-American boys, such as best-selling authors Irving Stone and Irving Wallace, whose parents looked to surnames from the British Isles to confer a measure of assimilation and class.

An offbeat possible replacement for the overused Melissa and Marisa, Nerissa was used by Shakespeare for Portia's witty confidante in The Merchant of Venice. Queen Elizabeth has a cousin named Nerissa.

Once a poetic Celtic name, that of the angel who governs the month of June, Muriel has for a time, become the mom or grandma of TV sitcoms. A Top 200 name from 1912 to 1933, Muriel might just be due for a comeback, fitting as it does with the likes of Margot, Mabel, Marjorie, and Marilyn.

Marvin has been neglected for so long that it's hard to believe that it has windswept Welsh roots. It also has some strong namesakes going for it -- singer Marvin Gaye, composer Marvin Hamlisch and boxer Marvin Hagler. It's the real name of both Neil Simon and Meatloaf. And let's not forget mention Marvin Gardens on Monopoly.

Nori is one of those names with several origins that would have no trouble assimilating into a variety of cultures. It might also be associated with the dried seaweed used to wrap sushi or with the nickname Kim Kardashian and Kanye West use for their daughter North.

Ariel is a male Biblical name, seen there as the messenger of Ezra, and also used as a symbolic name for the city of Jerusalem, while Shakespeare used it for a (male) sprite in The Tempest.

A popular choice back in the 50s and 70s, Rocky fell into decline after Sylvester Stallone's battered but not beaten boxer character became the overwhelming association many had with the name. Now, nearly five decades on from when the first Rocky movie was released, this tough yet playful name is back in style, ready to forge an identity of its own. Given to around 420 boys in the US in a recent year, it was one of the fastest rising names in the charts.

A color name, a gemstone name, and an ocean-inspired choice, Coral has a lot going for it with its sharp C sounds yet sweet vintage feel. Unlike Scarlett or Violet, however, it is only quietly used in the US these days, perhaps because of its similarity to more 'dated' Carol.

Reggae master Bob's surname was one of the biggest risers on the popularity charts for girls in 2008, with spellings Marlee and Marely also leaping in favor. Also used for boys, Marley is one of the top unisex names in the US.

Maris is an unusual and appealing name that has never appeared in the U.S. Top 1000, overshadowed by its twentieth century elaboration, Marisa/Marissa. It derives from the phrase "Stella Maris," star of the sea, one of the many epithets of the Virgin Mary, and became familiar via the unseen (but unliked) character of sitcom Frasier's ex-sister-in-law.

Kairi is the name of the main female character in the popular role-playing video game series, Kingdom Hearts. Voiced by Hayden Panettiere in the main series, Kairi is one of the seven Princesses of the Heart. Kairi entered the US Top 1000 in 2010 and was given to over 400 baby girls in one recent year.

Doris had long been on our so-far-out-it-will-always-be-out-for-babies list, and seemed to be written there in indelible ink. But there are signs of a sea change, that Doris could profit from the revivals of Dorothy and Dorothea.

Nickname name in the era of Grease. Sandy fits well in the era of boyish nicknames for girls - a la Scottie and Stevie - or as an alternative to the rapidly rising Goldie. While it peaked in 1960, Sandy is still given to about 60 baby girls each year.

Apt name for a little drama queen with a long future ahead of her. Saga is a Top 30 girls' name in Sweden.

If you love Dixie, Trixie and Pixie, this name of a mermaid-like sprite in German folklore may be for you. It might also make an update for Nicki.