This feminine form of Abel is also a flower name and makes a distinctive alternative to the widely used Abigail.  There is a similar name, Adelia, that is beginning to be rediscovered thanks to the trend for all names Adel- related.

Abelia

Acantha is one of the <a href="https://nameberry.com/list/317/unique-baby-names">unique baby names</a> in the stylish mythological category that also might count as a flower name. In Greek mythology, Acantha was a nymph beloved by Apollo. An unusual and attractive choice that could make a creative way to honor a grandma Rose.

Acantha

When used in English-speaking countries--it's heard occasionally in the UK--it's more often spelled ALARIC.  Unusual, but usable.

Alarik

Alvis, sometimes spelled Alviss, is a dwarf in Norse mythology who claims to know everything and names all the features of the natural world to show off to Thor, whose daughter Alvis wants to marry. But he gets so caught up in showing off his knowledge that the sun comes up and turns him to stone.

Alvis

This unjustly neglected floral name has a BBC accent and a Greek mythological heritage: Anthea is an epithet of Hera, the Greek queen of the gods, and her name has been used as poetic symbol of spring. 
 Anthea Disney is a high-powered business executive and distant relative of Walt.
 So if you want to go even beyond Azalea and Anemone, you might consider Anthea.

Anthea

With mythological names rising, the handsome son of Zeus and god of medicine, music, and poetry among many other things might offer an interesting, if high-pressure, option. 
 
But if Romeo and Venus are now deemed baby-appropriate, why not Apollo? Olympic speed skater Apolo Anton Ohno might inspire some parents. And now that it's been chosen by Gwen Stefani and Gavin Rossdale, it could take off as their first son's name—Kingston—has.
 Other cool associations include NASA's Apollo program, from 1961-72, that succeeded in putting the first humans on the moon when astronauts Neil Armstrong and Buzz Aldrin landed their lunar module and walked on the moon's surface. There's also the historic Apollo Theatre in Harlem, on whose stage the careers of Billie Holiday, Ella Fitzgerald, Artetha Franklin, Stevie Wonder, the Supremes, the Jackson 5, and countless others were launched.

Apollo

Better than Capricorn or Cancer, not as usable as Leo, the name of the Roman god of war becomes more possible as a baby name every day, as mythological names take the place of biblical names. 

Aries

Long more associated with the New York Waldorf- hotel and the neighborhood in Queens than as a baby name, Astoria is finally beginning to emerge from their shadow and find favor with parents looking to move beyond Brooklyn. The name Astoria is drawn from the surname of titan of industry John Jacob Astor, theorized to mean "hawk."

Astoria

Since Aurelius was given the supermodel seal of approval by Elle Macpherson, this is one of the Roman emperor names, like Augustus, now in the realm of possibility. Like the female Aurelia and Aurora, Aurelius has a particularly warm golden aura.
 In ancient Roman history, the name is associated with Marcus Aurelius, a Roman Emperor from 161 to 180 AD, the last of the so-called "Five Good Emperors." He is also considered one of the most important Stoic philosophers. He granted his name en masse to citizens of the empire who didn’t have one, making Aurelius a common and default nomen (family name) towards the later years of the empire.

Aurelius

Amais

Axelerin

Cassius, a Shakespearean name rooted in antiquity, is trending in a major way. It's one of a raft of Cas-starting names for both boys and girls, including Caspian, Cassian, and Cassia, that are enjoying a new moiment in the sun.
 
There were two notable Ancient Roman figures named Cassius. Cassius Dio wrote an 80-volume history of Rome. Gaius Cassius Longinus, a senator who led the assassination plot against Julius Caesar, is the main figure in Shakespeare's The Tragedy of Julius Caesar. 

 In more modern times, Cassius Clay was an abolitionist and also the birth name of boxer Muhammad Ali. It was chosen for their sons by singer Bobby Brown and Getty heir/actor Balthazar Getty. Vanessa Marcil and Brian Austin Green used the nouveau Kassius spelling for theirs. With these namesakes, it's no surprise this name has become popular in recent years. 

 Americans tend to pronounce the name CASH-us while Europeans, including the British, say CASS-ee-us. Cass and Cash are both accessible nicknames.

Cassius

Chrysalis is a girls' baby name derived from the state of a butterfly or moth between larva and adult. A chrysalis is a hard-shelled pupa in which the transition of the butterfly or moth takes place. As a baby name, Chrysalis came to the fore as the rumored name of the baby girl of Kylie Jenner and Travis Scott, who reportedly love butterflies. Chrysalis does certainly have potential as a new word name or nature name for babies, with the simple familiar nickname Chrys.

Chrysalis

Leathery, masculine image, complete with user-friendly short form. 

Cordovan

Chaldean

This authentic form of the name of an Irish mythological hero with the power to make women fall instantly in love with him would work far better here as the Anglicized Dermot. 

Diarmaid

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

Evaine

Spanish for galaxy, this larger-than-life name would make a bold but beautiful choice for girl.

Galaxia

Lucrezia

The least used of the Three Wise Men's names, but a strong option for bold namers to consider.
 
The exact origins of Melchior are unknown, but it is speculated that it derived from either the Hebrew roots melekh and 'or, together meaning "king of light," or the Persian melk and quart, taken to mean "city of the king."

Melchior

Pretty name that may pose pronunciation problems -- it's meer-AY -- but is well worth the effort. 

Mireille

This rarely used New Testament name could make an unusual route to the cool nickname Nico. Nicodemus (Noddy) Boffin is a character in the Dickens novel Our Mutual Friend.

Nicodemus

Odhran, Anglicized as Oran, was the name of an ancient saint. Today, Odhran is among the Top 100 <a href="https://nameberry.com/list/328/irish-baby-names-for-boys">Irish names for boys</a> in Ireland.

Odhran

The name of the brave, resourceful hero of Homer's epic saga has almost always been considered too weighty for a child to bear, but at this point, some brave, resourceful parents out there might be willing to take it on.

Odysseus

Peregrine is considered to be an elegantly aristocratic name in England, but has never made it to the U.S., where it has been seen as extravagantly eccentric. In the new naming climate, though, it's not beyond consideration &mdash; in fact it's already been chosen by at least one Berry.
 The meaning of Peregrine, which was borne by several early saints, relates to the transitory nature of life on earth, having nothing to do with the peregrine falcon. In literature, it is best known from the central character of Tobias Smollett's novel Peregrine Pickle.
 Historically, Peregrine was the name chosen for the first English child born in the New World &mdash; actually on the Mayflower when it was docked in Provincetown.
 And there's always the Mad Men-era nickname Perry to make Peregrine more user-friendly.

Peregrine

This name of a tragic figure in Greek mythology, the daughter of King Minos, sister of Ariadne and wife of Theseus, has a mysterious and intriguing appeal, and would make a dramatic choice.

 Phaedra has been a persistent theme in literature, both ancient and modern. There have been plays by Euripedes, Racine, Unamuno, and O'Neill, novels, poetry, operas and film--as recently as the 2011 Immortals starring Freida Pinto.
 One celebrity pulled a gender switch when she named her son Phaedra Bloom Forever.

Phaedra

Has a lot of energy and charm, as does the Italian form, Taddeo. 

Tadeo

A New Testament tax collector was called Zaccheus, the freshest spin on this biblical favorite. 

Zaccheus

DoomKitten's list "Fantasy and Mythological Sounding Names" of 29 great name ideas: Abelia - Zaccheus!

Fantasy and Mythological Sounding Names

Names for fantasy or mythological beings. Character names, could be used for unique baby names too.