With a meaning like "elf power," Alfreda could find some appeal among fantasy enthusiasts. "Freda" makes for a pleasant nickname.

Alfreda

Ever since the enormous German cannon was dubbed by Allied soldiers "Big Bertha" in World War I, this name hasn't worked for a sweet little baby girl. But this was not always so. Hard as it might be to imagine now, Bertha was a Top 100 name until the 1930s, and in the 1880s was the seventh most popular name in the land--the equal of Joseph.
 Bertha, aka Berchta, was a Teurtonic goddess borrowed from Norse mythology, regarded in her earliest incarnations as a beautiful and benevolent spirit. Bertha is an ancient Germanic name attached to the 6th century Saint Bertha of Kent, who was instrumental in the spread of Christianity, and it was the name of both the mother and daughter of Charlemagne. 
 In literature, Bertha Mason is the first wife of Rochester in Jane Eyre, and a character in Edith Wharton's The House of Mirth. The French version Berthe is represented by the French Impressionist painter Berthe Morisot. All in all, though, modern parents might do better to consider the Polish version, Berta.

Bertha

In the Bible, Beulah is a place, not a person, applied to the land of Israel by the prophet Isaiah. The land of Beulah has sometimes been considered a reference to heaven. Beulah began to be used as a given name in England at the time of the Reformation and was used by the seventeenth century Puritans.
 The Beulah Show ran on the radio in the 1940s and became a television sitcom in the 1950s, the first to feature an African-American title character. But that accomplishment is undercut by the fact that Beulah is a somewhat stereotypical maid.
 Only 14 baby girls were named Beulah in the US in 2015. So yes, the name Beulah would challenge the most audacious baby namer--but maybe that audacious baby namer is you.

Beulah

Variant of Brunhild, still clad in heavy armor. Though the heroine Brunhilda of Quentin Tarantino's recent film Django Unchained may have given this version of the name new appeal.

Brunhilda

Edwina may still be taking tea in the parlor, but we can see her joining friends like Matilda and Josephine for a comeback, especially if pronounced like Edwin rather than Edween. 
 She had a very non-vintage-mauve image in the Coen brothers' cult favorite, Raising Arizona, in which Holly Hunter played a police officer named Edwina who was usually called Ed.
 Edwina was on the Social Security list every year through 1969, reaching a high of 378 in 1943.

Edwina

The great-great-aunt in the purple hat, singing jazz. 

Elberta

An unusual old school name which is made more modern by that fashionable El- beginning.

Eldora

The name of the mother of Aethelred the Unready was once common among the Anglo-Saxon nobility, and was briefly revived during the 19th century, only to be lost once again to history. 

However, with the recent revival of Frida and other clunky-cool vintage gems like Agatha, Matilda and Theodora, we think this ancient option could be worth a second look. 

And how cute would a baby Elfie be?

Elfrida

Erga

As this word is less often used to mean derriere, it becomes more possible to view Fanny as the kind of appealingly quaint nickname name, like Josie and Nellie, that many parents are favoring now. 

Fanny

The meaning of this word flipped from "cheerful" to "homosexual" during the twentieth century, and it's now almost certainly too loaded to sit comfortably as a baby name. Which is a shame as sound-wise it's very appealing, just a short step away from Faye, May, and Rae.

Gerardine

Could cute nickname Gertie, remembered as cute five-year-old Drew Barrymore in E.T., revive the long shunned Gertrude?
 It's tempting to dismiss Gertrude as a name on its way through the door marked Out Forever, except that its long and honorable pedigree--as a goddess in Norse mythology, as the gentle and mystical Saint Gertrude the Great, and another St. Gertrude who is the patron of cats, and its use by Shakespeare for Hamlet's (not exactly exemplary) mother--earns it a place on the permanent roster. It has also been borne by such varied figures as writer Gertrude Stein, swimming champ Gertrude Ederle, British stage star Gertrude Lawrence, and arts patron Gertrude Vanderbilt Whitney.
 The pinnacle of fashion a century ago, Gertrude reached as high as Number 23 in 1900, but dropped off the list completely in 1966.

Gertrude

Griselda is a famous folklore figure, noted for her patience and obedience. Her story has been told by Petrarch, Chaucer, Boccaccio and set to music by Scarlatti, Vivaldi and Massenet. 

In the most famous telling of her story, Griselda's husband tests her fidelity and obedience three times. Once at the birth of her daughter, whom he asks Griselda to give up to be put to death. Griselda agrees. Her husband asks the same of their second child, a son. Again, Griselda agrees. Finally, her husband renounces her to marry another. Uncomplainingly, Griselda leaves. Eventually her husband reveals that he was testing her, and surprises her by showing her her alive and well children and taking her back in. 

Griselda is Anglicized as Grisell or Grizell. Zelda makes an attractive nickname option.

Griselda

An ancient German saint's name – and most famously the name of Harry Potter's snowy owl – but the combination of "head" plus "wig" feels a little too literal in English.

Hedwig

A traditional Nordic name, Helga was extremely popular throughout Scandinavia in the 19th and early 20th centuries. In Germany, it was a Top 10 pick from 1924 to 1943. And it still ranks in the Icelandic Top 50 today.

 In the English-speaking world, Helga has been associated with a series of unfortunate characters in popular culture, from the wife of Hägar the Horrible in the comic strip of the same name, to Helga Pataki from the kids' TV show Hey Arnold!. But more recent, more positive Helgas – like Helga Hufflepuff, one of the four founders of Hogwarts, and a character in the drama series Vikings – could redeem the name.

 Helga's Russian cognate, Olga, is a classic there, and still ranks in the Russian Top 50 today.

Helga

The disgraced heroine of The Scarlet Letter's name, after long neglect, just might have a chance at revival, following in the wake of sister-name Esther. We've characterized her elsewhere as an eccentric aristocrat, much more accepted in the U.K. than she has been here.
 Hester's beyond-Hawthorne's literary appearances include as characters in Theodore Dreiser's novel An American Tragedy, in Oscar Wilde's play A Woman of No Importance, in John Irving's novel A Prayer for Owen Meaney, and as Niles and Frasier Crane's mom on Frasier.
 Hetty is Hester's usual nickname, sometimes used independently.

Hester

Hildegarde

Hortense is actually the French feminine form of Hortensia, the name of a strong, politically active early Roman woman. Hortense began to be used in the English-speaking world in the nineteenth century. Napoleon had a stepdaughter named Hortense, it was the name of one of the main characters in the film Secrets and Lies and is also associated with novelist Hortense Calisher. As unappealing as it might be to most American parents, Hortense is now Number 155 in France (as of 2021).

Hortense

A Top 200 choice in the US from the late 1880s to the early 1930s, Irma has nevertheless fallen out of favor with modern parents, and doesn't look set for the sort of comeback that some of her vintage sisters have enjoyed in recent years. The devastating hurricane which hit the Caribbean Islands and the south-east coast of the US in 2017 has no doubt dealt its chances of revival a further blow.

Irma

When scientists do research on the effects of an unpopular name, we're afraid that Mildred is one of the examples they cite, often in tandem with Bertha and Gertrude. But with cute nickname Millie on the rise, anything's possible.
 Mildred is an ancient Anglo-Saxon name that became popularized in England via an eighth century saint. In the US, she was a Top 10 choice from 1903 to 1926. A literary/cinematic Mildred is James M.Cain's noir protagonist Mildred Pierce, portrayed on screen by Joan Crawford in an iconic role. Mildred Bailey was a great jazz singer.

Mildred

Long in our category of so-far-out-it-will-always-be-out category, once seen as a gum-cracking 1940's telephone operator, we think it's time to reassess Myrtle, and look at is as a nature name, a plant with pink or white aromatic berries. Ruled by Venus, myrtle is a plant associated with love, peace, fertility and youth.
 Myrtle has lots of literary references as well: in Thomas Hardy's The Hand of Ethelberta, Theodore Dreiser's The Genius, P. G. Wodehouse's Meet Mr Mulliner, and especially The Great Gatsby. Fitzgerald's Myrtle Wilson has been played on film by actresses as varies as Shelley Winters, Karen Black and Isla Fisher.

Myrtle

Renee5322's list "Old Lady Names That May Never Come Back" of 22 great name ideas: Alfreda - Myrtle!