Adeline has a lovely, old-fashioned "Sweet Adeline" charm, but has become so popular in the US under so many spellings and variations -- with Adalynn and Adalyn also popular -- that considered together it is far more popular than it first seems. Adorable nickname Addie is also pervasive. 
Adeline originated as a French diminutive of Adele, which came from the Germanic root adal, meaning "noble." Adeline was introduced to England by the Normans in the eleventh century, was very common during the Middle Ages, then vanished until the Victorian Gothic revival. Common variants of Adeline include Adalynn, Adalyn, Adelyn, Adelynn, Adelina, and Adaline.
 Adeline was introduced to England by the Normans in the eleventh century, was very common during the Middle Ages, then vanished until the Victorian Gothic revival.
 The song "Sweet Adeline" Is an old barbershop quartet favorite. JFK's grandfather John F. Fitzgerald, mayor of Boston, made it his theme song, and Mickey Mouse serenaded Minnie with it in a 1929 cartoon.
 Pronounced ad-a-line in America, it's usually ad-a-LEEN in France.

Adeline

Arya was derived from an Indo-Iranian word meaning "Aryan" or "noble." It is a masculine given name in Iran, Indonesia, Bali, and Sanskrit-speaking regions of India. In Hindu- and English-speaking parts of the world, Arya is more often a feminine name, the latter influenced by the similar Italian name Aria, meaning "air" or "song."
 
The prime impetus of Arya's rise is the fiercely independent young character Arya Stark in the TV series Game of Thrones, based on the George R. R. Martin books A Song of Fire and Ice. Another influence is the Elven princess in Christopher Paolini's Inheritance Cycle trilogy, basis of the movie Eragon. 
 
The name resembles the musical Aria and the male Aryan, both also growing in popularity in the US. Arya entered the popularity charts in 2010.

Arya

Bridget is the Anglicized form of Brigid, an Irish-Gaelic name that was derived from the word brígh, which means "strength." 
Bridget is the name of the most famous female saint of Ireland, who became the patroness of her country, as well as patron saint of scholars, poets and healers. Because of her sanctity, the name did not come into common use in Ireland until the seventeenth century, after which it became wildly popular. Bridget eventually came to be used as a pejorative name for an Irishwoman; Irish maids in the early 20th century US were derogatorily called "the Bridgets."
 
One of the earliest <a href="https://nameberry.com/baby-names/509/irish-names-for-girls">Irish names for girls</a> to immigrate to the USA, Bridget, the most familiar form of the name of the Celtic goddess of wisdom, is still used by traditionalists but also carries some modern spark and a great meaning. Bridget is one of the exclusive group of <a href="https://nameberry.com/list/96/girl-names-that-mean-brave-or-powerful">girl names that mean strong, brave, or powerful</a>.
 
According to Irish myth, there were three sister goddesses named Brigid: the goddess of poetry, the goddess of healing, and the goddess of agriculture.
Most prominent Bridgets today are actresses Fonda and Moynahan, op artist Bridget Riley, and the fictional hapless Bridget Jones—she and her diary the protagonist of four books, three movies, and even a musical.
 
Irish variants include Brighid, Brigid (as in the devious character in The Maltese Falcon), Bridie, Biddy, Brid and Bedelia.

Bridget

Both Caitriona and Catriona are commonly heard in Scotland and Ireland. The name was brought to Ireland by the Anglo-Normans, and is the source of nicknames Cait, Caitin, Caitlin and Triona. Actress Caitrona Balfe has gained recognition for her role on Outlander. Pronunciation is like Katrina.

Caitriona

Thanks to its dashing Anglo-Irish image — due partly to Colins Firth and Farrell — and its C-initialed two-syllable sound, Colin and its cousin Collin have enjoyed a long run of popularity, reaching as high as Number 84 in 2004. 
 The usual pronunciation of Colin is COLL-in, but the alternate COLE-in version was publicized by General Colin Powell, the first U.S. African-American Secretary of State, who was named after World War II hero Colin Kelly.
 Literary cred: Colin Craven is a character in The Secret Garden, and Colin Creevey appears in the Harry Potter books.
 Both Kevin James and Kiss's Paul Stanley have young sons named Colin, while Tom Hanks has a grown one.

Colin

Emilia is the feminine form of the Roman clan name Aemilius, which derived from the Latin aemulus, meaning "rival." In Shakespeare’s Othello, Emilia is the wife of Iago and confidante of Desdemona. Amelia, although homonymous, has a different root and meaning. 
 
Emilia is rising as an Emily/Amelia alternative. In modern pop culture, Emilia is the name of the main character in The Princess Diaries and the first name of Game of Thrones and Solo star Emilia Clarke.
 Emilia is currently enjoying high popularity across some diverse cultures—it's near the top of the charts in Germany, Finland, Austria, Poland and Chile, and is favored in both English- and Spanish-speaking countries.

Emilia

Emmett, honest and sincere, laid-back and creative, is on the rise as a male cognate of the megapopular Emma and Emily, not to mention being a character in the popular Twilight series.
 Emmett originated in England as a masculine diminutive of the German Emma; the Hebrew characters pronounced eh-MEHT mean truth, so that might be considered another definition. Emmet is another, less popular spelling.
The death of young Emmett Till helped spark the civil rights movement.

Emmett

Esmé comes from the past participle of the Old French verb esmer, meaing "to esteem" or "to love." It can also be considered a derivative of the Spanish name Esmeralda, which means "emerald". 

 Esmé began life as a masculine name, as in its original bearer, Esmé Stewart,1st Duke of Lennox, and Esmée, with the same pronunciation, was the feminine form. Today both spellings are used as feminine given names, along with Anglicizations including Esmay and Esmae.

 
Esmé is a sweet, sophisticated and charming literary name, from J. D. Salinger's classic 1950 story For Esmé, With Love and Squalor. Esme is also one of the most stylish <a href="/list/434/Baby-Names-That-Mean-Love">baby names that mean love.</a>

 A current favorite among celebs, including Samantha Morton, Michael J. Fox and Katey Sagal, Esme got a lot of publicity via the character Esme Cullen, the vampire matriarch of the Olympic Coven in the Twilight Saga. Esme has long been more popular across the pond in the UK, where it currently makes the Top 50 baby girl names.

 The final accent indicates the pronunciation of ez-may, though in English you can just spell it Esme. Whatever the spelling, Esme is one of the fastest-rising <a href="https://nameberry.com/search/girls-names/e">girl names starting with E</a>.

Esme

This was a 100 percent <a href="https://nameberry.com/boys-names">boys’ name</a> until celebs Jason Sehorn and Angie Harmon bestowed it on their daughter, recently followed by Lisa Marie Presley, who used it for one of her (female) twins. Finlay is also now among the most <a href="https://nameberry.com/unisex-names">popular unisex names</a>. 
At the most recent count, Finley was given 57 percent of the time to girls and 43 percent to boys, close enough to make it one of the truly gender neutral names.

Finley

Finn is a name with enormous energy and charm, that of the greatest hero of Irish mythology, Finn MacCool (aka Fionn mac Cuumhaill), an intrepid warrior with mystical supernatural powers, noted as well for his wisdom and generosity. 
 Finn was chosen by cool couple Christy Turlington and Ed Burns for their son, and also by Jane Leeves and Autumn Reeser. Played by Cory Monteith prior to his death, Finn Hudson was a prominent character on Glee.
Other up-and-comers in the same family: Finlay and Finley, Finian and Finnian, Finnegan and Finnigan, and, from Germany, Fynn.

Finn

Gemma is a jewel of a name, an Italian classic that was very popular in 1980s England, but has only recently been started to be used here; it entered <a href="https://nameberry.com/popular-names">the list</a> in 2008.
 Coming from a medieval Italian nickname for a precious gem, Gemma was the name of Dante's wife and was borne by a nineteenth century saint.
 Gemma is the name of the character played by Katey Sagal on Sons of Anarchy, and actress Catherine Bell has a daughter called Gemma, as does Kristin Davis.
 Bottom line: A stylish cousin of Emma and Jenna.

Gemma

Griffin is one of the newer and most appealing of the two-syllable Celtic surnames. In English, griffin is the name of a mythological creature, half eagle, half lion. It re-entered the list in 1983 after an absence of 75+ years.
 Brendan Fraser, Teri Polo and Joey McIntyre all chose Griffin for their sons. Actor Griffin Dunne's mother's maiden name was Griffin. Another well-known bearer was Griffin Bell, Jimmy Carter's Attorney General.
 Also worth considering: the original classic Welsh Gruffudd (dd=th).

Griffin

Patrician to the core, Hugh was firmly in the Top 100 until 1903. It's never achieved those heights again, though it has always managed to remain in the Top 1000, scraping bottom at literally Number 1000 in 2006 before reversing course and heading back upwards.
 Hugh has always been particularly prevalent among the Irish—there have been 20 Irish Saint Hughs, and it's traditionally associated with the O'Donnell clan. Hugh was an early immigrant to the New World, where there were two Hughs in the first English-speaking settlement in America. Hugh's biggest drawback is its sound, barely more than an exhaled breath. 
 
Actor Hugh Jackman adds a dash of the romantic hero, and other prominent Hughs include Hugh Laurie (born James Hugh), Hugh Grant, and Hugh Dancy. Then there's Hugh Hefner, known to the world as Hef. 
 Hew and Huw are the distinctively—probably too distinctively—spelled Welsh forms.
 A modern alternate option would be the surname Hughes.

Hugh

This name of a small island off the coast of Scotland is trending upwards along with other I names. 

Iona

This is a strong new James varietal, sometimes shared by girls. An original way to honor Grandpa Jim, Jameson is swiftly moving up the charts, entering the Top 100 for the first time ever in 2017. Jameson is one of the hottest <a href="https://nameberry.com/search/boys-names/j">boy names starting with J</a>, still the most popular first initial for boys' names. One small caveat: Jameson is also a brand of whiskey.

Jameson

Jasper originated as a variation of the Latin Gaspar, which ultimately derived from the Persian word ganzabara, meaning "bringer of treasure." As a given name, Jasper’s etymology is unrelated to that of the gemstone, which comes from a Semitic word meaning "speckled stone." Jasper is the usual English form for one of the Three Wise Men who brought gifts to the infant Christ according to medieval tradition and appears in the Bible as a reference to the stone itself in Revelations 4:3.
 
Jasper has a lot going for it—it's been rocketing up the ranks in the US, after long being considered a posh and charming name in England. Distinctly masculine, Jasper represents a variety of quartz—one of the few gem <a href="https://nameberry.com/boys-names">names for boys</a>—and is the first name of the great modern artist Jasper Johns. Our only caveat: Jasper is a favorite of a lot of hip parents, and has gotten even more popular since its strong appearance in the Twilight books and movies.
 Jasper has considerable literary cred as well, appearing in works by Sir Walter Scott, James Fenimore Cooper, Thackeray, and Thomas Hardy--as well as Stephenie Meyer. 
 Casper/Caspar is the German version.

Jasper

Jessamine, a charming name occasionally heard in England, is just beginning to be appreciated in the U.S. as a possible successor to all the Jess names of the past. It's also spelled Jessamyn, as in Quaker novelist Jessamyn West, author of Friendly Persuasion--who started life with Jessamyn as her middle name.
 Jessamine began to be used as a first name in Britain around 1900, along with other flower-related names. Yasmin and Yasmine are other Jasmine variations.
 This would make a great choice as a namesake honoring a Jessica.

Jessamine

Juliette, pronounced with the emphasis on the last syllable, adds a little something extra to Juliet. In the past years it has been rising up the chart.

 Juliet originated in the Middle Ages as a diminutive form of Julian, then a predominantly female name. It ultimately derives from Julius, a Roman family name. Its origin is shrouded in history, but possible roots include Latin iuvenis, meaning "youthful"; Greek ioulos, meaning "downy-bearded"; or Jovis, a form of Jupiter, which means "sky father".

Juliette

This is an alternative to Laura or Lauren made romantic by Dr Zhivago, and badass by video-game heroine Lara Croft.

 In mythology, Lara was a nymph in Ovid's Fasti known for her beauty and inability to keep secrets. As a place name, Lara is a state in Venezuela.

Lara

Liam is the top boys' name in the US, holding the Number 1 spot for the past seven years and also ranking as one of the most popular boys' names around the western world.
 Liam originated as a short form of Uilliam, the Irish variation of William. William is an English name from Germanic roots that was brought to Ireland when the British fled England following the Norman Conquest. The Irish began using English names, including William, which led to the development of Uilliam and its short form, Liam.
 Internationally, Liam is enjoying great popularity not only in the U.S. and its native Ireland, but in countries as diverse as Italy and Israel, Chile and Croatia. If you're looking for a boys' name that will easily translate across many languages and cultures, you can't do better than Liam.
 Irish-born actor Liam Neeson was instrumental in driving Liam up the charts, as was former Oasis member Liam (born William) Gallagher, and, more recently, One Direction member Liam Payne. Celebrities who have chosen Liam for their sons include Tori Spelling, Calista Flockhart, Rod Stewart, Kevin Costner and Craig Ferguson.
 Jaunty and richly textured, Liam holds solidly to the title of most popular boys' name starting with the letter L.

Liam

A versatile classic, Lucy is both sweet and solid, a saint's name, and the heroine of several great novels. First fashionable in England and Wales, Lucy is now a popular choice in the US, The Netherlands, and New Zealand.
 
The English form of the Roman Lucia, Lucy derives from the Latin word lux, meaning “light.” Once given to girls born at dawn, Lucy is also associated with Saint Lucia, the patron saint of the blind.
 
Lucy has a wide range of namesakes, from the bossy friend in the Peanuts comic, to psychedelic "Lucy in the Sky with Diamonds," to the rash and zany heroine of I Love Lucy. 
 
It is a name with a rich literary history, chosen for the heroines of Charlotte Brontë’s novel Villette, E.M. Forster’s A Room With A View, Jamaica Kincaid’s Lucy, and C. S Lewis’s The Chronicles of Narnia - just to name a few. 
 
Beyond fiction, Lucy Stone was an important American activist, Lucy Worsley is a successful author and historian, and Lucy Lui is an actress who has imparted strength and style to the name.
 
Simple but sophisticated, playful but grounded, it is no wonder Lucy is a popular choice. Given to over 4000 girls in the US each year, it is a classic that doesn’t feel dusty.
 
If you love Lucy, but don’t love its popularity, you could consider one of its many variants. From vintage Lucille, to the musical Lucetta, to the fresh, unexpected Lux; from nickname-y Lou to sleek Luciana, there are plenty of possibilities.

Lucy

Mia is an appealingly unfussy multicultural name that has enjoyed a meteoric rise up the charts and is now firmly among the ten <a href="https://nameberry.com/popular-names/nameberry/girls">top girl names</a>. Mia has surpassed its mother name Maria as the Number 1 <a href="https://nameberry.com/search/girls-names/m">girls' name starting with M</a>. 
 
Mia originated as a short form of Maria, which ultimately derived from the Hebrew name Miryam. In modern times, Mia has been used as a nickname for names including Amelia, Emilia, and Miriam. Mia is also an Italian and Spanish word meaning 'mine.'
 Mia's success is largely attributable to Mia Farrow--born Maria. Her name entered the Top 1000 for the first time in 1964, the very year that Farrow gained wide attention for her role on the nighttime soap Peyton Place.
 We see Mia as the daughter of Nina, or maybe Maya, and the granddaughter of Mary: a name that has something for nearly everyone. It works for the parent who wants a name that is simple and modern, and for those who seek a name with traditional roots. Mia sidesteps all the curlicues and ruffles attached to names like Isabella and Olivia, yet it's distinctly feminine.
 
And in some ways, Mia doesn't feel as trendy as its popularity standing might indicate. It's likable yet not really stand-out, a compromise choice for a lot of parents. Alternatives include a wide range of rhyming names that are less popular: Leah, Tea, Thea, Gia, Nia, Pia. 
 Kate Winslet is the mother of Mia Honey, and Ian Ziering is dad to Mia Loren.

In the contemporary US, Minka attracted notice via actress Minka Kelly, who played the gorgeous Lyla on Friday Night Lights.

This cute and lively nickname name can (and does) certainly stand on its own, but it can also be a diminutive of the diminutive Mina, short for Wilhelmina or any name ending in -mina. 

While Minka has never charted on the US Top 1000 and was given to only a few dozen baby girls last year, Mina is staging a comeback after several decades off the list following World War II, when many German names fell out of fashion.

Minka

Monroe is a presidential surname which feels fresher than Jackson, Lincoln and Taylor. Marilyn Monroe is a famous female namesake, but her smart Scottish surname feels equally usable for either sex. Plus, we think old man nickname Moe would sound both cool and adorable on a baby boy today!

Monroe

Originally a Dutch surname, imported by the early Dutch colonists, has been all but overpowered by the phonetic spellings in the US -- Skyler for boys and Skylar for girls. With the surnames-as-first-names trend, however, and the popularity of the Lin-Manuel Miranda's musical Hamilton, which features the Schuyler sisters, perhaps Schuyler might receive some more interest in the coming years.

Schuyler

The long-neglected name of Adam and Eve's third son after Cain and Abel, Seth is appreciated for its gentle, understated presence -- and strong middle-name potential. It reached a high of Number 63 in the year 2000.
 The name was adopted in England in the late Middle ages, then popularized by the Puritans after the Protestant Reformation.
 Seth was widely heard in the American old West, as reflected in such vintage TV oaters as Wagon Train, featuring Major Seth Adams. George Eliot and Charles Dickens both created characters named Seth and there is a Twilight werewolf called Seth Clearwater.
 Currently, Seth has taken on a lighter persona via such high-profile comical Seths as talk-show host Seth Meyers, the movies' Seth Rogen and animated-comedy creator Seth MacFarlane.

Seth

Tamsin is an offbeat name occasionally heard in Britain and just waiting to be discovered here. U.K. actress Tamsin Greig is a star of the show Episodes, Tamsin Olivier is the daughter of Joan Plowright and Sir Laurence Olivier..
 Tamsyn is the alternative medieval Cornish spelling. Other spellings are represented by actresses Tamzin Outhwaite and Tamzin Merchant, and by writer Tamasin Day-Lewis, sister of Daniel.
 Tamsin is a 1999 fantasy novel by Peter Beagle.

Tamsin

It may have been made up for a futuristic television show, but this name would not be out of place among such present-day trendies as Kayla and Taylor.

Teyla

Tristan -- known through medieval legend and Wagnerian opera -- has a slightly wistful, touching air. This, combined with the name's popular "an" ending, makes Tristan very appealing to parents seeking a more original alternative to Christian.
 One influence was the character Tristan Ludlow played by Brad Pitt in the 1994 movie Legends of the Fall, based on a Jim Harrison novel.
 Tristan is a dragon-slaying hero of Celtic legend, whose story was incorporated into Malory's Le Morte d'Arthur, in which Tristan is one of the Knights of the Round Table, consumed by his doomed love affair with Queen Isolde. Wagner set the story to music in his opera Tristan und Isolde.
 Tristan and its alternate form Tristram have been found in later lit as well. Tristram Shandy is a famous early comic novel by Laurence Sterne (in which the hero's father calls Tristram the worst name in the universe); Tristan is a major character in James Herriott's All Creatures Great and Small, and there is an eponymous novella by Thomas Mann.
 Particularly popular in Canada, Tristan was chosen for their sons by Travis Tritt, Wayne Gretzky, Natasha Henstridge and, most recently, by Elsa Pataky and Chris Hemsworth. Basketball player Tristan Thompson hails from Canada.
 Other variants of Tristan include Tristen, Tristin, Triston and Tristian.

Tristan

This Latin word used for evening spiritual services was introduced to baby namers by the Eva Greene character Vesper Lynd in the modern James Bond film Casino Royale in 2006, based on the Ian Fleming novel, and is just now beginning to provoke interest among namers, with its spiritual reference and soft, whispery sound.
 On a more earthly note, the 'Vesper Martini' is the famous drink ordered by James Bond in both the book and the movie Casino Royale.
 A name likely to enter the Top 1000.

Vesper

Gingerdaffodil's list "Little Bit of This & That" of 30 great name ideas: Adeline - Vesper!

Little Bit of This & That

My main list for all the best names in my baby name bank