One of the most romantic of appellations, Caspian is a geographical name referring to the large salty sea between Asia and Europe. It's also the name of the hero of C.S. Lewis's beloved Chronicles of Narnia, Prince Caspian.

Florence is back, returning to the US Top 1000 girl names in 2017 after a nearly 40 year absence. Other English-speaking countries have been quicker to welcome Florence back into fashion.

Eden is an attractive, serene name with obvious intimations of Paradise, one of several place names drawn from the Bible by the Puritans in the 17th century.

Adelaide is now heading straight uphill on the coattails of such newly popular sisters as Ava, Ada, and Audrey, and in the company of Adeline and Amelia. It was chosen by actress Katherine Heigl for the name of her second daughter.

Forrest is one of the earliest appealingly sylvan, outdoorsy choices, borne by newsman Sawyer, actor Whitaker, and football Hall of Famer Gregg. Forrest Gates was a character on "Buffy the Vampire Slayer."

Jordan became one of the top unisex baby names in the heyday of basketball's Michael Jordan, and is still among the most popular unisex names starting with J. The name was originally given to those baptized in holy water brought back by Crusaders from the River Jordan, the only river in Palestine, and the one in which Christ was baptized by John the Baptist.

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.

This Biblical name was rising dramatically for boys, but has plateaued in recent years. Although it's more popular for girls in the US, it's a delightful unisex choice. Eden is one of the Top 100 Boy Names in France, closing in on the Top 10.

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.

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.

Camden is a surprise hit, probably as a result of some star baby cred: it has been chosen by no less than four celebrity parents since 2012. Gentle but not flimsy, Camden could be an updated spin on Cameron, Callum, or Caden.

Holland is one of the coolest geographical names, unadorned and elegant, evocative of fine Rembrandt portraits and fields of pink and yellow tulips. It first entered the US Top 1000 for girls in 2014, but fell out of the Top 1000 for boys a century earlier.

As trendy as the chic Colorado ski resort, with a hint of whimsy from the shimmering trees, Aspen has been climbing the charts for boys since the early 90s. While it has always been more popular for girls, it could work for a boy too.

Aspen is part of two groups of stylish and unique baby names: nature names and place-names. The name of a graceful tree in the poplar family with heart-shaped leaves so delicate they quiver in the gentlest breeze, Aspen is also the name of a trendy Colorado ski resort. Aspen started as a unisex name possibility but now is much more frequently worn by girls.

Haven is a recently invented safe-harbor name that appeals to an increasing number of parents who don't want to voyage quite as far as Heaven.

Sierra is a name borrowed from the western mountain range, with Latin rhythm and cowboy charm, that has led to many offshoots: Cierra, Cyara, and so on. It is now probably past its peak but retains its pretty-yet-strong sound. The meaning refers to the sharp, irregular peaks of some of the Western mountains such as the Sierra Nevada.

Chelsea is still being used, with about 400 baby girls named Chelsea in the US last year. But it was much more popular a few decades ago, peaking at Number 15 in 1992.

This twist on the popular Everett takes it to lofty heights and gives it a geographical and nature-inspired link. The snow-capped Everest could make a name that stands out without feeling too out there, and it may be seen more often in the classroom (that is, outside of the textbooks) in coming years.

With its relation to Mount Olympus, home of the Greek gods, and to the Olympic games, this name has an athletic, goddess-like aura, making it the perfect Olivia substitute.

Originally used for children baptized in holy water from the river Jordan, it became one of the leading androgynous names of the nineties. As the balance tips toward the boys' side, it's slipping on the girls' popularity chart. Alternate spelling Jordyn is now more popular for girls.