One of Dumas' swashbuckling Three Musketeers, now better known as a men's cologne. 

Aramis

The simple and attractive Bryn is well used for boys in Wales, and does have a history as a male name in the US, although both Bryn and Brynn are currently far more popular for girls.

 Fans of British TV sitcom Gavin and Stacey will recognize it as the name of Stacey's lovable and eccentric uncle, played by Rob Brydon.

Bryn

Corbin, the name of the castle where the Holy Grail was said to be hidden, came to the fore in the 1980s via actor Corbin Bernsen when he was the high profile star of LA Law, but its use is only now escalating as part of the mania for two-syllable names starting with c or k, as well as from the more youthful image of Corbin Bleu, the attractive actor-model-dancer-singer who was one of the stars of the Disney hit High School Musical. 
 Bruce Willis's character name in The Fifth Element was spelled Korben Dallas.

Corbin

Enough parents have found naturalist Charles Darwin, the father of the theory of evolution, a worthy hero to keep Darwin relatively consistently in the Top 1000 (it dropped off in 2021 but is back in 2022)—though some might just like its trendy two-syllable sound. It has a lovely meaning too—"dear friend."

Darwin

Elliot (which boasts several spellings depending upon how many 'l's or 't's you want to use) is a winner -- it has the ideal quality of being neither too common nor weirdly unique. Elliot had a style boost back in the early 1980s via the young hero of the movie E.T. , who was named Elliott. Since then there have been Elliots on Law & Order: SVU and Mad Men.
 Elliot namesakes include composer Carter, actor Gould, and photographer Erwitt.

Elliot

Felix is one of those ancient but nontraditional names for boys that have come into favor over the past few decades, a favorite of parents who want a masculine name with history and heft that breaks ranks with the standard Franks and Freds. Felix is also an international darling, ranking in the Top 100 in several European and English-speaking countries.

Felix was originally a Roman surname but was adopted as a nickname by the ancient Roman Sulla, who believed that he was especially blessed with luck by the gods. It is the name of four popes and sixty-seven saints; in the Bible, Felix is a Roman procurator of Judea.
 
Felix, energetic and upbeat with a felicitous meaning, has finally transcended its negative associations to Felix The Cat and the persnickety Felix Unger. 
 
The name appears in literature as the central character in George Eliot's novel Felix Holt, the protagonist of Thomas Mann's Confessions of Felix Krull, in Thomas Hardy's Tess of the D'Urbervilles, Henry James's The Europeans, Kurt Vonnegut's Cat's Cradle, and as a member of the Volturi Guard in the Twilight series. In movies Felix has popped up in everything from several James Bond films to Spy Kids and The Hangover.
 
Gillian Anderson and Elizabeth Banks are two modern celebrities who chose Felix for their baby boys. A notable namesake is Felix Frankfurter, a long-term Supreme Court Justice.
 
Popular in the Hispanic community, Felix is also celebrating a surge abroad. Felix has been on the <a href="https://nameberry.com/popular-names">U.S. popularity list</a> for as long as records have been kept and is rapidly becoming a Nameberry fave.

Felix

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

Henry is back. The classic Henry climbed back onto the Top 10 in the US in 2021 for the first time in over a century, and now stands at Number 8.
 Like James and Theodore, Henry is a traditional name that also manages to feel stylish. Despite its popularity, it's not for everyone, but in some upscale American suburbs, it can seem as if every other little boy is named Henry or Theo or Jack.
 Henry was derived from the French Henri, which ultimately comes from the Germanic name Heimrich, made up of the components heim, meaning "home" or "estate," and rich, meaning "ruler." The most famous bearer is Henry VIII of England, best known for having six wives—two of whom he beheaded for not bearing him sons. It’s been used in the British royal family many times since, including for the current prince better known as Harry.
 
Other illustrious Henrys that might provide baby name inspiration include Henry David Thoreau, Henry (Hank) Aaron, Henry James, Henry Ford and Henry Miller.
 Numerous celebs have chosen Henry for their sons, from Julia Roberts to Minnie Driver to Heidi Klum to Colin Farrell.
 Appealing international versions include Arrigo, Enrico, Enzio and Enrique.

Henry

Because of its meaning, a symbolic name given to boys born on TuB'Shevat, the New Year of the Trees, or Arbor Day. 

Ilan

Jaunty, to say the least, Jonty might be an option if Johnny feels too old school. It has been noticed most often on the playing fields, as in U.K. rugby player Jonty Parkin (born Jonathan) and South African cricketer Jonty Rhodes (Jonathon).
 
It did rank in the UK Top 1000 in the 2000s.

Jonty

Jasper and its many international variations, from Kasper to Casper to Gaspard, is finding new popularity.

Kasper

Lorcan is a name rich in Irish history as belonging to several kings, including the grandfather of the most famous high king of Ireland, Brian Boru. Lorcan O'Toole, known in English as Laurence O'Toole, is the patron saint of Dublin, so it's not too surprising that Irish-born actor Peter O'Toole named his son Lorcan.
 In the Harry Potter epic, Lorcan is the twin son of Luna Lovegood Scamander.
 Strong, easy to pronounce and spell, Lorcan is an Irish name that would stand out from the more common crop of Connors and Liams.

Lorcan

The K may be trendy, but this spelling variation is much less popular than Marcus.

Markus

Nathaniel was derived from the Hebrew name Netan’el, meaning "gift of God," composed of the elements natan, meaning "to give," and ’el, in reference to God. The name is featured several times in the Old and New Testaments, typically spelled Nathanael. In the New Testament, Nathanael is also known by his other name, Bartholomew.
 
Although Nathan is more popular, the more dignified Nathaniel dropped out of the Top 100 for the first time since 1977 in 2016. Despite the profusion of Nat names around, Nathaniel remains singularly appealing and distinctive, with several attractive nicknames — Nat, Natty and Nate.
 A boy named Nathaniel would have any number of real life and literary namesakes to inspire him. These include Revolutionary General Nathanael Greene, enslaved rebel Nat Turner, writers Nathaniel Hawthorne and Nathanael (born Nathan) West, lithographer Nathaniel Currier, partner of Ives, and singer/pianist Nat "King" Cole.
 An early literary character with the name is Sir Nathaniel in Shakespeare's Love's Labour's Lost. And then there was Natty Bumpo in James Fenimore Cooper's Leatherstocking Tales, Nathaniel Winkle in Dickens's The Pickwick Papers, and later Dr. Nathaniel Branden in Atlas Shrugged.
 In the realm of pop culture, we find such Nathaniels as Nate Fisher in Six Feet Under, and others in The Wire, Gossip Girl and Enchanted, as well as Pirates of the Caribbean character Nathaniel Hawk.

Nathaniel

Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers. 
 Like most <a href="https://nameberry.com/baby-names/160/german-names">German names</a>, Otto fell out of favor during and after the two World Wars – it had been a Top 100 name in the years preceding. Off the Top 1000 from the mid-1970s until 2011, Otto is now headed straight uphill.
 <br/
There were some distinguished Ottos before the imperial image of Prussian Otto von Bismarck colored the name. Otto the Great is generally considered the founder of the Holy Roman Empire and there were several German and Austrian royals with the name. 

 Otto Frank was the father of Anne Frank, the young Jewish girl who wrote her famous diary during her family's years in hiding from the Nazis during World War II. She was killed in Bergen-Belsen concentration camp in 1945 and her father Otto typed and edited the diary himself to prepare it for publication. 

 Otto Hightower is a character in the Game of Thrones universe, played by Rhys Ifans in the HBO prequel House of the Dragon.

 Feminine forms of Otto include Ottoline, Ottilie, Odilia and Odette, all fashionable in the UK along with Otto itself.

Otto

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

Quentin, an offbeat name with lots of character, relates to the Latin for the number five and is by far the subtlest and most usable of the Latin birth-order names, masculine as well as stylish and distinctive. It was borne by a third-century saint and came to England with the Normans.
 Sir Walter Scott wrote the novel Quentin Durward in 1823, about a young, upper-class Scotsman, and Quentin Compson is both a male and a female character in William Faulkner's The Sound and the Fury. Real-life bearers include movie director Quentin Tarantino; eccentric British author Quentin Crisp (born Denis); and Quentin Blake, illustrator of Roald Dahl books. Theodore Roosevelt had a son named Quentin.
 Trivia tidbit: St. Quentin is the protector against coughs.

Quentin

Roland is a chivalrous old name made famous by the supposedly eight-foot-tall romantic hero and nephew of Charlemagne, celebrated in medieval poetry and song. It is more widely heard in the US now in its Spanish form, Rolando. You might want to consider rollicking short form Rollo, either on its own or as an abbreviation of Roland. Orlando is the graceful Italian form. Like other vintage names (Roland was a a Top 100 name in the 1920s), Roland has been fashionable of late.

Roland

Sebastian is an ancient martyr's name turned literary, and Little Mermaid hero—think Sebastian the Crab—that's more popular than ever, as a classic-yet-unconventional compatriot for fellow British favorites T Theodore and Oliver.
 Sebastian is derived from the Greek Sebastianos, meaning "from Sebastia." Sebastia was a city in Asia Minor—modern day Sivas, Turkey. Sebastian is a name with a substantial history, first as the third-century martyr whose sufferings were a favorite subject of medieval artists, then as the name of memorable characters in such varied works as Shakespeare's Twelfth Night and The Tempest and Evelyn Waugh's Brideshead Revisited.
 Sebastian is high on the lists in countries as widespread as Austria, Denmark, Romania, Australia and Chile. Some more down-to-earth nicknames for the relatively elaborate Sebastian not often heard in this country are Seb, Baz and Bas. 
Several celebs have chosen the sophisticated Sebastian for their sons, including James Spader, Kim Fields, Malin Akerman and Tommy Hilfiger.

Sebastian

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

Also related to the word for wolf, this name has a first syllable that's not appealing to the American ear. Better ic-ending choices: Dominic, Frederic, Eric. 

Ulric

A dashing, dramatic and romantic Italian surname, associated with early movie heartthrob Rudolph, and later with Italian fashion designer Valentino (Garavani).  Also the name of an early Roman saint, whose feast day marks the beginning of spring. Ricky Martin chose it for one of his twin boys.

Valentino

Dignified first name of poet W. H. Auden, less exposed than his currently stylish surname.

Wystan

Xander is a diminutive of Alexander, the Latin variation of the Greek Alexandros. Its meaning, "defending men," is taken from the Greek roots aléxein, "to defend," and andros, "men." Zander, pronounced the same way, is an alternate spelling.
 
One of the newer short forms of Alexander, Xander is a spelling that first saw the spotlight via Buffy the Vampire Slayer, and then as Vin Diesel's character in XXX. Mad Men star January Jones named her son Xander Dane.
 
Even shorter forms Xan and Zan are now also being used on their own. Xan is a character in the P. D. James novel The Children of Men and is a favorite choice of computer game creators.

Xander

Alas, poor Yorick, your name is fated to remain locked forever as a skull in Hamlet.

Yorick

One of several more venerable names that get to the nickname Zack if you're tired of Zachary.  In the New Testament, Zacharias was the husband of Elizabeth and father of John the Baptist.


Zacharias

jks3n's list "ABC of Boys Names" of 26 great name ideas: Aramis - Zacharias!

ABC of Boys Names

Challenged myself to pick a name that I like for each letter of the alphabet for boys.

I'm not a huge fan of anything too popular and like to have some meaning behind each name. Some letters were harder to pick from like V, Y and Z