The Lyla spelling variation has now superseded the original Lila — the former remains on the rise while the latter is consistently falling in popularity.

It is popularly claimed that the name Wendy was invented by Sir James Barrie in 1904 for the big sister character in his play Peter Pan, which was followed by the classic novel in 1911. Barrie supposedly took it from the nickname "fwendy-wendy", that he was called by a young girl acquaintance.

A name that has a bit of a shouldn't-I-be-a-middle-name sound, though still in use as a first for both genders. Lee might be a good choice if you want something that sounds at once traditional yet modern, unisex but not newly-minted.

Jackson is one of those names that's much more popular than you think, coming in near the top of our annual Playground Analysis, which ranks names by grouping all their spellings together. Last year, more than 13,000 baby boys were named Jackson -- along Jaxon, Jaxson, Jaxxon, Jaxen, Jaxyn, Jaxsen, and Jaxsyn -- which counted together makes it the Number 5 boys' name.

Sean, after a long reign as one of the top Irish boys' names in the US, has now slipped as parents look to fresher Irish choices such as Liam and Aidan. In Ireland, Sean is still highly popular, but variation Senan, an Anglicized spelling of diminutive Seanan, is also stylish in Ireland. While Sean is the Irish form of John, Seanan and Senan may be thought of either as Sean diminutives or relatives of the Latin word "senator".

The independent Alex has become a classic in its own right. One of the truest unisex names, Alex is used almost equally for both sexes. Alex is used both on its own and as a short form of formal names of both genders, such as Alexander, Alexandra, and Alexis.

Lowell is an upstanding and somewhat conservative name that calls to mind the genteel patrician families of nineteenth century New England, such as the one poet Robert Lowell was born into. Two other Lowell-surnamed poets are Amy and James Russell.

An alternative to the no-longer-fresh Molly, the initial 'P' gives Polly a peppier sound, combining the cozy virtues of an old-timey name with the bounce of a barmaid.

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.

The doe-eyed Fawn is as gentle and soft as the baby deer it represents. And much like that baby deer, it carries with it the potential of new life. Fawn was featured at the bottom of the Top 1000 throughout the '60s and '70s — around the same time that Bambi came into play. But unlike Bambi, Fawn maintains relevance in the 21st century, thanks to its warmth and ties to the natural world. We would love to meet more baby girls named Fawn.

A name that feels both spiritual and trendy, Trinity surged up the charts in the early 2000s, following the release of The Matrix. In just two years, it made an impressive jump from the latter end of the charts to the US Top 100, where it remained for more than a decade.

Many will associate this name with Galen of Pergamon, the second-century physician considered to be the founding father of medicine. A more recent reference is Star Wars character Galen Erso. The name still projects a gentle, scholarly image, while sharing sounds with more popular names like Aiden and Nathan. Bonus: it's also an anagram of Angel.

Despite a rich history in Irish myth preceding its plantation appearance in Gone with the Wind, widespread use in the seventies caused Tara to lose its Irish accent.

Almost as popular in the 1950s among the Irish in Boston as it was with those back in Bray, Maureen was once among the most prominent Irish names for girls in the US but has fallen from favor along with most of her een-ending sisters such as Eileen and Colleen.

Literally meaning "lady" in Italian, Donna was the perfect ladylike housewife mom name on The Donna Reed Show in the fifties and sixties. And there were plenty of namesakes: Donna was in the Top 10 in 1964. These days we'd be more likely to associate it with the emanciatpated clothes of Donna Karen than as a baby name.

One of the glamour girl names of the Rita Hayworth 1940s, Rita was once a Top 50 name and stayed on the SSA list until 2002.

Clay is a rich, earthy one-syllable name with a southern-inflected handsome-rogue image, featured on soap operas and reality TV. Its longer forms are Clayton and Clayborne.

Kip Thorne, nobel laureate and long-time colleague of Stephen Hawking, is just one of several Kips who don't have a longer name. But Kip is often short for Christopher.

While Charlotte and Caroline are considered stylish and classic members of the Charles family, this Germanic form peaked in the US at Number 76 in 1965. It fell out of favor in the 2010s, but recent years have seen it re-enter the Top 1000.

Every other little kid's name in 1957 but few Jameses are called Jimmy today; they're more often James or Jamie.