Hadley, most famous as the name of Ernest Hemingway's first wife, is more sophisticated, professional, and modern than cousins Harley, Haley, or Hayden. The hit book The Paris Wife, a novel by Paula McLain told from the point of view of Hadley Hemingway (born Elizabeth Hadley Richardson), has helped popularize the name, which also appears on the vampire show True Blood. Hadley could become this generation's Hailey. Adley, a mashup of Hadley and Addie, has also appeared on the scene.

Hadley, an old surname-name best known as the name of author Ernest Hemingway's "Paris Wife," only recently broke onto the scene in a big way. While Hadley has considerable appeal, spelling variations such as Hadleigh—and onward to Hadleah, Hadleah, Hadli and so on—only emphasize its trendiness. Hadleigh made its first appearance on the US Top 1000 in 2014.

It all started in 1946, when Hayley Mills was given her mother's maiden name. Now that spelling is in third place, after Hailey and Haley, with all three adding up to one of the most popular names in the country. Hayley is the most used spelling in Australia.

Once a macho biker name, Harley is now showing its softer side. In the UK, Harley is predominantly masculine, but it's currently more popular for girls than boys in the US.

The second most popular spelling of this name is also the most straightforward.

Appearing in some versions of the Old Testament, Ardith sounds like an ethereal combination of Arden and Edith, with a sweet naturey meaning. Also appearing as Ardeth and Ardath, it was first considered as a first name after the writer Marie Corelli used Ardath as the name of her 1889 novel. It was at its peak in the 1930s, when it was given to 176 girls.

Hemingway readers will recognize this as the name of Papa's first wife (and, eventually, actress Mariel's grandmother). But in Victorian times, Hadley and Hedley were actually more popular for boys.

As all good Anne of Green Gables buffs would know, Avonlea is the fictional Canadian town created by L. M. Montgomery that Anne Shirley considers home. The literary creation inspired a real Canadian town to adopt the name. Avonlea would make a lovely literary choice for any baby, and would fit in with the Ava and "-lee" naming trends right now.

If you discount the connection to the controversial Whittaker Chambers in the days of the Red Scare, Whittaker is a pleasant enough British surname with the preppyish nickname Whit.

Presidential surname adopted as a first by numbers of midcentury African-American parents.

Also a dog breed

Summerfield is a habitational surname, meaning people with this name in their family tree likely have ancestors from Summerfield, Wiltshire, England. It is also an Anglicization of the Ashkenazic Jewish surname Sommerfeld.

Perfect for a child of Japanese Irish heritage.

An English surname derived from multiple place names, which ranked in the Top 500 for boys in the US until the turn of the 20th century.

If you want a truly unusual name with authentic roots, this one certainly fits on both counts. Pronunciation may prove a stumbling block, however.

Short, simple international names like this make distinctive middle name possibilities. Nir also makes for a nature-oriented first name that's both straightforward and unusual. But be prepared for a lifetime of "...and far" jokes.

Not as familiar as some other Asian imports; has a strong unisex feel.

Pronounced Beecham, but still too fancy and fey. Likewise Beaufort (beautiful fort), Beaufoy (beautiful beech tree), and Beaumont (beautiful mountain).

Also a dog breed