You might think Artemisia is the feminine form of the name, but in fact the original Artemis is feminine too, the name of the Greek mythological goddess of the moon.  Artemisia Gentileschi was an esteemed Italian Baroque painter, unusual in an era when not many women were acknowledged.  Artemisia is also a genus of plants which include sagebrush and tarragon.

Artemisia

Arwen is well known as princess of the Elves in Tolkien's Lord of the Rings. The author took inspiration from Welsh for many of his character names, and indeed Arwen and its masculine counterpart Arwyn do have a modest history of use as legitimate Welsh names, deriving from the -wyn suffix ("fair, blessed") plus an intensifying prefix.

 Trivia tidbit: The International Astronomical Union names all colles (small hills) on Saturn's moon Titan after characters in Tolkien's work; in 2012, they named a hilly area "Arwen Colles" after Arwen.

Arwen

Archimedes 

Bram has an unusual measure of character and charm for a one-syllable name; it started as a hipper-than-Abe diminutive of the biblical Abraham, but is also an independent Irish and Dutch name, made famous by Irish-born Dracula creator Bram (nee Abraham) Stoker. Bram is currently Number 16 in the Netherlands; Bram Howard was a character on The West Wing.
 Another route to Bram is Bramwell, as in early actor Bramwell Fletcher, who &mdash; speaking of horror movies &mdash; was noted for his mad scenes in the 1932 film The Mummy.

Bram

Belphoebe

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. 
 
The name Caspian is ultimately derived from the Latin term Caspii, meaning "white." Caspii was the name of the people of Central Asia who were originally from Caucasus. 
 
Caspian is attracting a lot of attention from cutting-edge parents these days. It fits in with several trends as a name from classic children's literature, a water-related place name, and an ancient name with the trending Cas- beginning, ala Cassius and Cassian.

Caspian

Cedric was invented by Sir Walter Scott for the noble character of the hero's father in Ivanhoe, presumed to be an altered form of the Saxon name Cerdic. The name was later also given to Little Lord Fauntleroy, the long-haired, velvet-suited, and lace-collared boy hero of the Frances Hodgson Burnett book, who became an unwitting symbol of the pampered mama's boy.
 Since then that stereotype has been broken principally by the handsome Harry Potter character Cedric Diggory, played by the teen-aged pre-Twilight Robert Pattinson, and it, like cousin Cecil, is at the point of being rediscovered by cutting-edge namers.
 Actor and comedian Cedric the Entertainer has propelled this name into the spotlight in recent years.
 Cedric has been on and off the charts the last few years, but is currently back in the Top 1000 in 2022.

Cedric

Celtic goddess of poetry, though less-than-poetic name. 

Ceridwen

Cosima, the kind of elegant and unusual name the British upper classes love to use for their daughters, is given to a handful of baby girls in the US after being chosen by two high-profile celebs in the same month; cool couple Sofia Coppola and Thomas Mars as well as supermodel Claudia Schiffer. It was used earlier by celebrity chef Nigella Lawson, while the male form, Cosimo, was given to the son of Marissa Ribisi and Beck.
 
The most famous Cosima in history had strong musical ties — Cosima Wagner was the daughter of composer Franz Liszt and the wife of composer Richard Wagner. Cosima is well used in Germany, Italy and Greece, but in the US, it was given to only ten baby girls in 2021, the same number who got the name in 2010.
 
A note on pronunciation: in Germany, Italy, and Spain, they say KO-zee-ma, like cozy ma. In the UK, they rhyme the first syllable with boss. In the US, you can do whatever you want.

Cosima

Desdemona is as Shakespearean as a name can be, but because the beautiful and innocent wife of Othello came to such a tragic end, her name has been avoided for centuries. But at this point in time, there might be some adventurous parents willing to overlook that.
 Jeffrey Eugenides used the name for a character in his novel Middlesex.
 And for those seeking some celestial cred, Desdemona belongs to the Shakespearean Portia Group of satellites, which also includes Bianca, Cressida, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita.

Desdemona

If you're looking for a Welsh name less common than Dylan, Griffin, Evan, or Morgan, you might want to consider this offbeat epithet of the wise wizard Merlin. 

Root name Ambrose is an ancient saints' name derived from the Greek ambrosia, the food and drink of the gods that conferred immortality.

Emrys

Endellion is the name of an early saint who was a daughter of King Brychan and goddaughter of King Arthur whose life is commemorated by the Cornish village of St. Endellion. This intriguing ancient name was brought into modern usage by British Prime Minister David Cameron, who used it as one of the <a href="https://nameberry.com/list/673/middle-names">middle names</a> for his fourth child, a baby girl.
 
The Latinized form of the name is Endelienta.

Endellion

Eulalia is a melodious name with a southern drawl, thanks to those lilting double Ls.
 A teenage martyr, Saint Eulalia was born in Spain and is a patron saint of Barcelona, where there is a cathedral in her name. One legend associated with Eulalia is that a dove flew out of her neck when she was killed, thus the association with both sweet speech and peace.
 Eulalia is a character in William Faulkner's Absalom, Absalom; Marcia Gay Harden has a daughter named the related Eulala Grace.
 Eula is the traditional short form, but Lalia or Lally would make more appealing and modern-sounding nicknames. The French version is Eulalie (subject of a Poe poem); in Spanish it's Olalla.

Eulalia

Evander is a name that could build on the popularity of shorter form Evan, and could work and play well with schoolmates like Zander and Xander.
 Evander was prominent in Greek and Roman mythology: in classical lore Evander was a wise Arcadian hero who founded the city in Italy that preceded Rome, appearing in Virgil's Aeneid.
 Evander also derives from a Norse name meaning bow warrior.
 In modern times, the name has been associated with boxing champ Evander Holyfield.
 Evander could make a more distinctive aternative to Alexander.

Evander

An unusual Gwyn name with a lovely meaning, this compound name pairs Gwyn with the name Eira, meaning "snow". A relatively modern creation, it remains very rare.

Gwyneira

She was queen of the Greek gods, both sister and wife to Zeus, but the name of her Roman counterpart Juno has become much more fashionable these days. That said, we think Hera has possibilities today too, as so many ancient goddess names rise to prominence.

More than 50 baby girls were given the name last year, about the same number as were named Eugenia. About twice that many were named Juno. Another similar mythological choice, Hero -- yes, it's a female name -- was given to only 13 baby girls.

Hera

Illyria

Leander is an almost unknown name with great potential as a possible alternative to the overused Alexander. In Greek legend, Leander was the powerful figure who swam across the Hellespont every night to visit his beloved Hero, a priestess of Venus.
 Leander is currently a Top 40 name in Norway; Leandro is the attractive Spanish form, and Leandre is popular in France--it appears in three Moliere plays.
 Leander Sydnor was the name of one of the younger police detectives on The Wire.

Leander

Since Morgan is used as--or more--frequently for girls as for boys, this feminization has fallen by the wayside. It drew some brief attention via the pop singer Morgana King. 
The similar Morgiana appears in Tales from the Thousand and One Nights.

Morgana

Meriadoc

The association with the infamous Nero, the fiddling Roman emperor, would be unavoidable. But there was also the detective Nero Wolfe, hero of many mystery stories.
 Nero was born Lucius Domitius Ahenobarbus, and Lucius might be a preferable choice if you know anything about ancient Roman history.

Nero

Nimue

Odin is the name of the supreme Norse god of art, culture, wisdom, and law — who was handsome, charming, and eloquent into the bargain. The name projects a good measure of strength and power and has excellent assimilation potential.
 The god Odin was referred to by more than 200 names, including Yggr, Sigfodr, and Alfodr — none of which is recommended. The word Wednesday is derived from Woden, the English form of Odin.
 Odin came to be used as a Norwegian male given name beginning in the nineteenth century, originally in the context of a romantic Viking revival. In the 2001 novel American Gods by Neil Gaiman, the character called Wednesday is an incarnation of the god Odin.

Odin

Ukrainian figure-skating champion Oksana Baiul made it known here. 

Oksana

Orlando, the ornate Italianate twist on the dated Roland, with a literary heritage stretching back to Shakespeare and before, has appealing book-ended o's, and is open to combination with almost any last name, a la British actor, Orlando Bloom.
 Orlando has an impressive literary résumé, including the poem "Orlando Furioso,", Handel's opera "Orlando", Shakespeare's As You Like It and Virginia Woolf's gender-bending novel. Most recently, Orlando was a character in The Wire.
 Orlando Bloom's name was inspired by that of the sixteenth century composer, Orlando Gibbons. It is also the first name of several outstanding athletes--including Orlandos Woolridge, Cabrera and Cepeda, and is, of course, a place name, home of Disney World in Florida.

Orlando

Penrose – an ancient place-name and surname derived from several villages in Cornwall, Wales, and the Welsh border country of England – would make for an even more unexpected alternative to quirky nature name Primrose. Intuitive nicknames Penny or Rosie make it feel more wearable.

Penrose

Persephone is the esoteric name of the Greek mythological daughter of Zeus by Demeter, the queen of the harvest. 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 seasons.
 Despite the mixed message of her mythological past, Persephone has a light and lyrical aura, and pleasant associations with springtime and the harvest; she was also goddess of spring growth. Persephone was seen in the Matrix movies, played by Monica Bellucci, and could make an interesting replacement for the overused Stephanie.
 Persephone's meaning is in dispute: While some sources give it as the worrisome "bringing death," others indicate that's it's associated with dark blue and with speaking. Persephone was called Kore in childhood; in Roman mythology, she is Proserpina.
 Persephone is popular on Nameberry, ranking in the Top 100.

Persephone

Polythymnia

Remus is one of the legendary twins who, with brother Romulus, founded Rome.  An unusual yet classic name for the extremely adventurous who can put aside the stereotyped image of Uncle Remus.  Though because of that "ream" first syllable, we prefer Romulus.

Remus

Samwise

Some sources give Thorin as a variation of the thunder god name Thor, equivalent to Thoren, while others says it comes from the verb að þora, meaning "to dare." This is a dwarf's name that first appeared in the thirteenth century mythology compilation Prose Edda, which, along with the Poetic Edda, represents nearly all of pagan Scandinavian mythology. Tolkien later used the name for character Thorin II Oakenshield of The Hobbit.

Thorin

Theoden

sapphires's list "The Magical and Mystical" of 32 great name ideas: Artemisia - Theoden!

The Magical and Mystical

The quirkier side to my list - mythical, magical names