The ancient German name Adelheidis gave rise to both Adelaide and Adelheid. While Adelaide is more popular and better known internationally, Adelheid is still used occasionally in Germany, the Netherlands, and Scandinavia. The German pronunciation is not that different from Adelaide, with a soft h and a long I sound instead of a long A in the last syllable.

Heidi originated as a short form of Adelheid.

Adelheid

Annegret

Benedikta

Brigitta

Charlotte, the name of the young Princess of Cambridge, is the latest classic name to join Sophia, Emma, Olivia, and Isabella at the top of the popularity list. It is now among the most popular girl names in many English-speaking and European countries.
 
The feminine form of Charles, Charlotte derived from Charlot, a French diminutive of Charles meaning "little Charles" and the name of Charlemagne’s son in French literature and legend. The name was popularized by England's Queen Charlotte Sophia, wife of King George III.
 
Queen Charlotte was the mother of fifteen children and a patron of Mozart and Bach. She and George ruled England in the late eighteenth and early nineteenth century during the French and American revolutions.
 
Charlotte is an elegant royal name, with a host of widely varied role models, from Charlotte Brontë to the spidery protagonist of E. B. White's Charlotte's Web to the more recent Charlotte York, aka the prissy one, of Sex and the City. Charlotte is appealing to a wide range of parents because it sounds feminine yet grownup, sophisticated yet lush. 
 
Charlotte is a pop culture staple—it was Scarlett Johansson's character in Lost in Translation and has been featured on TV shows like Lost and Revenge. The band Good Charlotte was named for a children's book with that title. An all-around winner of a name, Charlotte has been chosen by Chelsea Clinton, Dylan McDermott, Colin Hanks, and Sarah Michelle Gellar and Freddie Prinze Jr.
 In addition to Charlie, Lottie makes a cute nickname.

Charlotte

Claudia is a classic name with ancient Roman roots. Never truly in or truly out, Claudia feels like a strong, modern choice that hits the sweet spot between too popular and too unusual..
 Claudia was a common <a href="https://nameberry.com/girls-names">girls’ name</a> in ancient Rome, borne by the wives of both Nero and Pontius Pilate. The name is mentioned in the New Testament in one of St. Paul's letters to Timothy as one of the Christian women in Rome. As a result, it was taken up in the sixteenth century and has been in moderate use ever since.

 There was a popular mid-century series of novels by Rose Franken, beginning with Claudia: The Story of a Marriage. The name was also used by Agatha Christie and Penelope Lively, as well as being a main character in Anne Rice's Interview With the Vampire. Model Claudia Schiffer gave it an infusion of glamour, as had earlier Italian actress Claudia Cardinale. Michelle Pfeiffer has a daughter named Claudia.

 While some parents may be put off by the common "lame" meaning, some etymologists theorize that the name may relate to the word for enclosure or clause, an alternate meaning that may appeal to a child with a form of this otherwise appealing name.

Claudia

This royal Danish name has long  been used across Scandinavia, Germany and Slavic countries and somewhat in the US around the turn of the last century --it was #622 in 1888. There were two notable silent screen stars named Dagmar, one with Polish, the other with Danish roots.

Dagmar

Dorthe

Ebba, the feminine version of Eberhard and also a form of an old English name, is in the Swedish Top 10 but virtually unknown in the US. However, with the rise of Emma, Ella, Ada, and similar simple-yet-traditional names, Ebba may enjoy more widespread popularity. 

Ebba

Elfriede

Friederike

Frauke

Mythological goddess of fertility whose name seems, ironically, among the least attractive. 

Gerda

Like Greta, Gretchen is a German Margaret diminutive that has become an American quasi-classic, though not much used today, having dropped off the list in 2009. She was at her high point in the 1970s, making it into the top 200.
 Gretchen appears in Goethe's Faust, and has been seen more recently on Heroes and Breaking Bad. The name is currently enjoying a dash of modern glamour via actress Gretchen Mol.

Gretchen

A pretty and substantial German smoosh name, a combination of Hanne and Eleonore. Most popular in Germany from the 1930s to the 1950s. Former German Chancellors Helmut Kohl and Helmut Schmidt both had wives named Hannelore.

Hannelore

Henriette is to Henri (or Henry) what Charlotte is to Charles. Yet this elegant French name is surprisingly rare in the States.

Henriette

Ing was a powerful Norse god whose name inspired several modern variations -- though Inga has become a caricatured Scandinavian choice. 

Inga

Ivonne

Jutta

Jordis

Konstanze

Kreszentia

Leonore is a melodic variation of the wide range of names related to Eleanor and, via a different root, Leonie that are so stylish throughout Europe right now and bound for greater visibility in the U.S. The name of one of the little princesses of Sweden, Leonore carries the gravity of Eleanor with more quirky charm. 
The only downside: Spelling and pronunciation confusion given so many similar variations, from Lenora to Leonie to Eleanora and onward.

Leonore

Liese

Melitta

Marlis

Nadja

Nikola

Ottilie is trending in the UK, where the pronounced T helps the name sound pretty and delicate, ala Amelie. Ottilie is less popular in the US, where many Americans pronounce it as a near-homonym for "oddly".
 
Ottilie and its diminutive Ottiline are a pair of names heard among the British upper crust, but have rarely been seen here since the 1880s. Ottilie does have a few cultural references: She is a key character in Goethe's Elective Affinities, Robert Louis Stevenson wrote a poem called To Ottilie, Franz Kafka had a sister named Ottilie, and it is the name of the protagonist in the John Wyndom sci-fi story Random Quest.
 
Probably the best-known Ottilie is the German journalist, abolitionist, and feminist Ottilie Assing, who had a long involvement with fellow abolitionist Frederic Douglass.
 
Some attractive Ottilie relatives: Ottoline, Ottilia, and Odile. And Ottilie has the adorable nicknames Lottie and Tillie.

Ottilie

Ortrun

A strong Greek name with pan-European charm, Petra is a relatively recent feminization of Peter, though it relates back to an incredible ancient city in Jordan that was rediscovered in the early nineteenth century. 
 Currently among the most popular girl names in Croatia, Hungary, and Bosnia and Herzegovina, Petra ranked in the US Top 1000 every year from 1880 to 1951, reaching a high of #493 in 1929.
 There have been Petras in two European film classics: Ingmar Bergman's Smiles of a Summer Night and Rainer Werner Fassbinder's The Bitter Tears of Petra von Kant. The most prominent Petra in recent years is gorgeous supermodel Petra Nemcova, who is also an international disaster relief activist. Petra is also the name of a famous Christian rock band.

Petra

Priska

Whether spelled Raffaela, Rafaela, Raffaella, or Raphaela, a euphonius name with a dark-eyed, long-flowing-haired image. Like Gabriella and Isabella, is beginning to be drawn into the American mainstream.

Raffaela

Roswitha

Sidonia is an international spin on the recently-trendy Sydney. Plus Sidonia has an advantage over the French Sidonie in that it sounds more distinct to the English speaker. An original way to honor grandpa Sid.

Sidonia

Svenja

Thora, related to Thor, is the ancient Norse thunder goddess name that's much softer and gentler than its meaning suggests. A noted bearer is actress Thora Birch. 

Thora

This diminutive of Valeria has a strong and striking sound to match its meaning. It has also been used in Brazil in recent decades.

Valeska

Vera was the height of fashion in 1910, then was for a long time difficult to picture embroidered on a baby blanket. Now, though, it has come back into style along with other old-fashioned simple names such as Ada and Iris. 
 Vera was barely known in the English-speaking world until it appeared in the 1860 novel by Ouida, Moths, and Vera Rostov is a character in War and Peace, published nine years later.
 Vern Yip has a young daughter called Vera, and Vera Wang and Vera Famiga have modernized it. Vera Lynn was an iconic British World War II singer, Vera Miles was a Hitchcock star best known for her role as Lila Crane in Psycho and Vera-Ellen (born without the hyphen) was a dancing partner of Fred Astaire and Gene Kelly.

Vera

Wilhelmina was long burdened with the Old Dutch cleanser image of thick blond braids and clunky wooden clogs, but that started to be changed somewhat by the dynamic Vanessa Williams character on Ugly Betty, and even further by the choice of Wilhelmina by ace baby namers Natalie and Taylor Hanson. For the less adventurous, Willa is, for now, still a more user-friendly female equivalent of William.
 Wilhelmina was a lot more commonly heard in the U.S. at one time: it was as high as Number 215 in the 1880s, but has been off the list completely since 1955.
 Queen Wilhelmina reigned in the Netherlands for most of the early twentieth century, becoming a heroic figure during the two World Wars. The name got an infusion of glamour via Wilhelmina Cooper, the Dutch-born model who established the top Wilhelmina Model Agency in 1967. Wilhelmina "Willie" Scott was the name of the Kate Capshaw character in Indiana Jones and the Temple of Doom.
 To enliven her image, Wilhelmina has a plethora of nicknames: Mina, Minna, Minnie, Billie, and Willa. Wilma.

Wilhelmina

Wibke

thetwentyeighth's list "Book Names Project C" of 41 great name ideas: Adelheid - Wibke!