Sleek, sharp, and soulful, Isolde is the German form of Iseult, the fabled lover of Tristan in the Arthurian romances. First appearing in the 12th-century, the name was fairly popular in the form of Iseult, Yseut, Yseult, and Ysolt, however, it wasn't until the 19th-century that this form began to catch on, after the composer Richard Wagner used it for his 1865 opera (and for his own daughter!)

Tristan -- known through medieval legend and Wagnerian opera -- has a slightly wistful, touching air. This, combined with the name's popular "an" ending, makes Tristan very appealing to parents seeking a more original alternative to Christian.

Magical and earthy, sophisticated but off-beat, Persephone appears as the daughter of Zeus by Demeter in Greek mythology. After she was kidnapped by Hades to be Queen of the Underworld, it was decreed by Zeus that she would spend six months of the year with her mother, allowing crops to grow, and six in mourning, thus accounting for the change of seasons. As such, she is both the goddess of the Underworld and of Spring.

Casimir, a traditional name of Polish kings, could do quite well these days as we see the rise of Caspian, Cassius, Castiel, et. al. Like Leopold and Laszlo, Casimir is strong and worth considering if you've got an adventurous streak — and bet your son will too.

Mara is the evocative ancient root of Mary, appearing in the Book of Ruth, in which Naomi, devastated after the death of her two sons, says "Call me not Naomi, call me Mara." It's one of the girl names starting with M that both fits in and stands out.

Name of the legendary ancient Greek poet and musician — whose music was so beautiful it made trees dance and rivers stop to listen — would provide a child with a challenging but indelible identity.

As modern as it sounds, Blaise is an ancient Christian martyr name. In Arthurian legend, Blaise is the name of Merlin the Magician's secretary. Its relation to the word and name Blaze gives it a fiery feel. Amanda Beard named her baby boy Blaise Ray.

Jezebel, the wife of King Ahab in the Hebrew Book of Kings, has long had a bad girl reputation. But in the modern secular world, this is somewhat mitigated by the feminist perspective of her as a strong woman, the power behind the throne. Previously avoided as a baby name, Jezebel is now, along with the also previously avoided Delilah and Desiree, coming into use, helped by its relation to other 'bel' name such as Isabel and Bella.

Brazilian supermodel Gisele Bundchen undoubtedly gave this name a boost. The French pronunciation (jiz-ELLE) gives it a more graceful, balletic, gazellelike feel.

Though it's related to the Virgin Mary, this name was once perceived as the height of sensuality, a role since taken over by nicknames Lola and Lolita.

Cecelia, with this spelling, got some recent attention as the name of Jim and Pam's baby on The Office -- and also the name of actress Jenna Fischer's newborn niece. A spelling variation of Cecilia that has a gently old-fashioned feel and several appealing short forms, including Celia, Celie, and, as on the TV show, Cece. Three times as many babies are given the Cecilia spelling as get the Cecelia one, though if you plan on calling your daughter Cece or Celia, Cecelia may feel like the more logical spelling.

Early 1980s sitcom (Family Ties) name that has been well used ever since, with an upbeat three-syllable sound and a slightly tomboyish edge.

Ajax is the name of two Greek heroes, both who fought in the Trojan war and feature in Homer's "Iliad". Distinctive yet familiar in sound, thanks to similar choices like Jack, Asa, and Ajay, Ajax is also the name of a foaming cleanser in the US, and if you find that reference too strong, you might try the shortened Jax instead.

This is a soft, soignée French girls' namethat has become familiar here via singer Solange Knowles, younger sister of Beyonce.

Eris was the goddess of strife and discord, turned fairy tale and then popular culture figure Maleficent in Sleeping Beauty. Ironic, as her name sounds so much like that of Eros, the god of love.

Rooted in Greek mythology, Ares entered the US Top 1000 in 2013, when it was one of the year's fastest rising names. Similar in style to Atticus, Atlas, and Ari, it has continued to climb up the charts, and now ranks in the Top 500, given to around 770 babies each year .

The mythological Morrigan was the ancient goddess of war, often symbolized by a crow. Besides being a name, this is also used as a proper noun preceded by an article: the Morrigan, defined as a monster in female form. The meaning of Morrigan has been related to both terror and greatness. While some relate the name to Morgan of the Arthurian legends, Morrigan and Morgan are actually unrelated.

The name of the great Homeric hero with the vulnerable heel, Achilles is more popular in its international form, Achille, which is popular in France, Italy, and Belgium. This variation did however appear briefly on the US Top 1000 list in 2015, perhaps owing to its similarity to the likes of Atticus, Adonis, and Apollo. It has declined in use since then, but is nevertheless chosen for around 160 babies each year.

This buoyant name has the same bouncy rhythm as Rafferty and Barnaby, but is virtually unused. It has plenty of literary cred, too: characters in The Chronicles of Narnia, Harry Potter and Thomas Hardy’s The Return of the Native have all borne the name.

Sadly, this strong Celtic name often has "of the sorrows" attached to it because of the tragic character in Irish legend. Also a bit drab when compared with newer Irish imports.