lavenderwitch's list "Dreamy Water Maiden" of 20 great name ideas: Diantha - Giverny!

Dreamy Water Maiden

Names in this category are daydreamers and sensitive souls, escapists and runaways, river dancers and water sprites, wandering spirits with wandering thoughts. Colors and textures include green, green, green - emerald and glass, lichen and moss, with sprinkles of blossom pink; impressionist paintings of willows and waterlilies; bare toes dipped in burbling brooks; cherry blossoms drifting in swirling eddies; the wavering view of trees from beneath the surface; empty rowboats meandering through clusters of lily pads; branches of weeping willow reflected in slow-moving streams; billowing white dresses of ivory lace and creamy chiffon, weighed down by water and dripping with algae; delicate hopes and pools of melancholy and the undertow of longing for something more. 

Diantha, a mythological flower of the supreme Greek god Zeus, is a melodious and more unusual cousin of Diana, heard most often in The Netherlands. 
 Some similar choices: Diandra and Dianthe.

Diantha

Less known than other Cornish beauties like Elowen, Demelza, and Kerensa, Elestren is a pretty botanical name ripe for wider usage. While it may have a starry, celestial feel, likely owning to sound-alikes Estelle, Celeste, and Seren, Elestren actually comes from the Cornish name for the iris flower, most specifically, the yellow iris. 
 
Though it has yet to appear in the UK stats, it may still catch on (even if it is only quietly) among those looking for rare alternatives to Elowen.

Elestren

The famous home of Hamlet in Shakespeare's great play, Elsinore is based on Kronborg Castle in eastern Denmark. Known as Helsingør in Danish, it guarded the narrow entryway to the Baltic Sea for centuries.
 
Similar in sound to Eleanor or Lenore, Elsinore has potential as a name. While some may find it a little pretentious or be bothered by the 'snore' sound, it could make a fabulous middle name for a lover of Shakespeare, or a daring and unexpected route to popular nicknames Nora and Elsie.

Elsinore

Romantic and mysterious, Eluned's beauty and intelligence were legendary in Welsh legend; she was the handmaiden of the Lady of the Fountain in a Welsh Arthurian romance, who had a magic ring that made the wearer invisible. Pronunciation is usually similar in emphasis to Eleanor, but with ned instead of nor at the end. However, it's sometimes also pronounced el-LIN-ed or even shortened to Luned, the sounce of Lynette, in Tennyson's Gareth and Lynette.

Eluned

Gemstone names have a long history of use, from Ruby to Pearl. Emeraude is the French word for emerald. If the Spanish Esmeralda is stylish, why not Emeraude?

Emeraude

Eulalie hasn't ranked in the US Top 1000 since 1899, but its French roots might make it more appealing to modern ears than its sister Eulalia.
 "Eulalie" is a poem by Edgar Allan Poe, and the name also appeared in Gone With the Wind and The Music Man. It has been on the French popularity list for most of the 2000s. Eulalie Spence was a playwright from the British West Indies who contributed to the Harlem Renaissance.

Eulalie

French variant of Euphemia, which feels a little lighter and fresher than the English form.

Euphemie

Evanthe is a pretty Greek name not often heard outside its native culture.  With its stylish Ev-begining, Evanthe could make an interesting choice if you're looking for a generic flower name.

Evanthe

Eleocasia

Ferelith is an unusual yet deeply-rooted Scottish girl's name, also found in ancient Ireland and drawn from the Gaelic Forbhlaith or Forbflaith.  While it went through a period of dormancy after the Middle Ages, there are some modern women named Ferelith, including actress Ferelith Young and Princess of Denmark Anne Ferelith Fenella Bowes-Lyon.

Ferelith

This unusual (to non-Welsh speakers) is near the top of the charts in Wales, carried by the recent taste for native Welsh names. Those in Wales say it's already on the way down, but for outsiders wanting to honor their Welsh heritage, it still makes an intriguing choice.

Ffion

Fionn is the Irish form of the name modernized as Finn, but popular in this form in Ireland, where it's in the boys' Top 20. A couple dozen baby boys in the US were named Fionn last year and no baby girls, though there were girls named Finn, Fionna, and Fionnuala, so Fionn may be thought of as a variation or short form of those names.

Fionn

Fiore is a feminine name of Italian origin meaning "flower." It embodies natural beauty, blossoming, and delicate strength. In Italian culture, the name carries artistic and romantic associations, reflecting the aesthetic appreciation central to Italian heritage. 

While traditionally more common in Italy, Fiore has gained international appeal for its melodic sound and elegant simplicity. The name has connections to the influential Renaissance artist Fiore dei Liberi and appears in Italian literature and art. 

Its botanical meaning places it among nature-inspired names that have timeless appeal. Fiore offers a distinctive alternative to more common floral names while maintaining a clear connection to nature. Its brevity and vowel-ending give it a flowing, musical quality typical of Italian names.

Fiore

This yellow harbinger spring bloom was named for Scottish botanist William Forsyth, and is even more unusual than such species as Acacia and Azalea.

Forsythia

Feyra

Feyre

Florimel

This name's meaning derives from the material from which the mythical sculptor Pygmalion chiselled his ideal woman - she was carved from ivory. Pygmalion fell in love with his creation and Aphrodite, taking pity on him, brought the sculpture to life. The woman was named Galatea due to her incredibly pale skin. The Pygmalion myth was the inspiration behind the story of "My Fair Lady" starring Julie Andrews on stage and Audrey Hepburn on screen.

Galatea

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.