In Greek mythology this was an alternative name of the god Chronos, also used in English and a good candidate for baby name usage due to its good meaning and name-like sound.

Aeon

Long, lively Latinx version of Athanasius.

Atanacio

Parents are beginning to look at imposing, somewhat fusty-sounding names like this one with fresh eyes: they definitely make a strong statement.
 Augustus originated as a title given by the Roman Senate to the first Roman Emperor, Octavian, the adopted son of Julius Caesar, in 27 B.C. and adopted by him as a name. In the U.S., Augustus reached a high of Number 175 in 1880, fell off the list in 1970, then made a return appearance in 1991, and is now on the rise once more. 
 Augustus Snodgrass is a character in Charles Dickens' novel The Pickwick Papers, and George Bernard Shaw wrote a play titled "Augustus Does His Bit." Augustus John was a famed British portrait painter, and Augustus Saint-Gaudens a well-known sculptor.
 No starbaby Augustuses as yet, but Dixie Chick Emily Robson used Augustus as a middle name for her son, and Dan Aykroyd did the same---for his daughter.
 The diminutive form, Augustine, is also an interesting option; variant Augustin was used by model Linda Evangelista; and then there is always über-popular August.

Augustus

Aurelian

Bartholomew is an apostle's name that's been out of favor for centuries but might appeal again to the parent in search of an old but rare choice. The challenge could be to avoid the Simpson-ish nickname. That character, by the way, has the full name of Bartholomew JoJo Simpson, and creator Matt Groening came up with Bart as an--uh oh--anagram for brat. Two old alternate nicknames are Barty and Tolly.
 Ben Jonson's 1614 comedy Bartholomew Fair is set in London on St. Bartholomew's Day. Charles Dickens used the name in Bleak House, and, more recently, Bartholomew Cubbins is the protagonist of the Dr. Seuss books The 500 Hats of Bartholomew Cubbins and Bartholomew and the Oobleck

Bartholomew

Bartolomeo

Caesar, the name of the greatest Roman of them all, is rarely used outside Latino families, where the Cesar spelling is preferred —as in activist Chavez and Dog Whisperer Millan. Its original meaning is debated — either "long-haired", "blue-gray" (as in eyes), or "cut" (because Julius Caesar was supposedly born by cesarian section) — it came to be the title to denote all Roman emperors and it is from the name Caesar that many other European royal titles are derived, including Kaiser and Tsar.
 In antebellum America, Caesar became a common name among enslaved people, along with such other classical appellations as Cato and Octavius.

Caesar

Cezary

César

Swashbuckling name worthy of a hero in a romance novel. Deveraux or Devereaux is drawn from the River Eure in France. Mick Jagger has a son named Deveraux.

Deveraux

Dionysus

Ellington is a swinging musical name, evoking the jazzy and elegant persona of the Duke (born Edward Kennedy Ellington). While that reference may seem to make Ellington a male name, it is also occasionally used for girls.
 Ellington is the winning middle name of Cynthia Nixon's son Max.

Ellington

Emiliano and Emilio are the appealing Latinate version of Emil. Emiliano Zapata Salazar was a leading figure in the Mexican Revolution, who helped establish modern Mexico.

Emiliano

Emmanuel--spelled with one or two 'm's'-- was popular with early Jewish immigrants, until overused nickname Manny caused it to fade. Now, this important biblical name is being revived in its full glory.
 In the Bible, this is the name given to the promised Messiah, in the prophecy of Isaiah.
 The name is popular in Spain as Manuel; the name of the German philosopher is spelled Immanuel Kant.

Emmanuel

Feliciano

This cognate of Jerome (of all things), familiar via the Dutch painter of fantastical scenes, H. Bosch, would appeal only to the most audacious, intrepid, attention-seeking baby namer. It is, however, still used in Germany, especially in Catholic Bavaria and in the north German Rhineland.

Hieronymus

Classy-sounding surname name usually bypassed in favor of the simpler Landon. 

Langdon

For centuries this name was associated primarily with the towering figure of Italian Renaissance painter-scientist-inventor Leonardo da Vinci, and was scarcely used outside the Latin culture. 

But then along came Leonardo DiCaprio, who was supposedly given the name because his pregnant mother felt her first kick while looking at a da Vinci painting in the Ufizzi Gallery in Florence, and who would make the name young and handsome and multi-cultural. 
 Leonardo is a popular choice among other attractive Italian and <a href="https://nameberry.com/baby-names/806/spanish-names-for-boys">Spanish names for boys</a>, and its cousin Leo is popular as well.

Leonardo

This name once seemed a bit grand and pompous for an American baby boy, but a significant number of parents are now preferring it as a substantial platform for the nickname Max, among them Jennifer Lopez and Marc Anthony, who chose it for their twin son.
 Maximilian was a traditional royal name among the Hapsburgs in Austro-Hungary and also in Bavaria. In literature, it appears as the husband of Rebecca in the eponymous novel and also in The Count of Monte Cristo. Maximilian Schell was a highly respected Austrian actor who won a Best Actor Academy Award in 1961.

Maximilian

The ultimate artist's name would make an unforgettable impression. It's the first name of famed Italian director Antonioni.

Michelangelo

This image of this distinguished Anglo-Scottish surname, drawn from the French place name of the ancient castle of Saint Foi de Montgomery, is rapidly shifting from fusty and formal to cool. And dashing short form Monty (or Monte) nudges it to cute. 
 Best-known bearer of the name is beautiful-but-tortured midcentury actor Montgomery Clift. Roger de Montgomery was a Norman nobleman who was made Earl of Arundel after he invaded England in 1066 and Sir Bernard Montgomery was a noted army commander in World War II. Montgomery is also the proper first name of Star Trek's engineer Scotty and, less flatteringly, the middle name of The Simpsons' evil Mr. Burns.

Montgomery

Although he goes by the alias Pain in Naruto, Nagato's name actually means "long-lasting gate." It is speculated that his name comes from famed 16th-century ninja Fujibayashi Nagato.

Nagato

Percy Bysshe Shelley got the name for one of his most famous poems -- a sonnet about the insignificance of man's labors in the vastness of time -- from the Greek name for Ancient Egyptian pharaoh Ramesses II. 

Ozymandias has seldom been used as a first name for baby boys, and it's not hard to see why. Five ponderous syllables are a lot to bear. But literary names and ancient names are both hot categories, and Oz is quickly becoming trendy, so we can easily imagine some parents gravitating toward this impressive-sounding name. TV fans may recognize Ozymandias as the title of the third-to-last episode of "Breaking Bad," which many consider the best of the entire series.

Ozymandias

Raphael is a romantic archangel name that sounds both artistic and powerful. Raphael is also a great cross-cultural choice, with significance for people with both Latinate and Jewish roots, plus plenty of grounding in the English-speaking world.
 Raphael was one of the seven archangels (called by Milton "the affable archangel") who attended the throne of God and, as the angel of healing, is the patron of doctors as well as of travelers, science and healing. Another worthy namesake is the great Renaissance painter Raphael (born Raffaello Sanzio). Several celebs have chosen the name, including Robert De Niro, Ana Ortiz and Melissa George.
Rafael is the Spanish spelling, as represented by Spanish tennis champ Rafael Nadal. Rafi is the familiar Hebrew nickname.

Raphael

Santiago is a spirited Spanish name with great crossover potential. It's a place-name (a city in Chile), a surname, and the name of the patron saint of Spain. 
 
Santiago has been rising through the popularity charts in the US for more than 30 years now, and shows no signs of slowing down. It might make a creative honor name for an ancestral James.
 Santiago has been featured in several works of fiction: it was the main character's name in Hemingway's The Old Man and the Sea, in Gabriel Garcia Marquez's Chronicle of a Death Foretold and Paolo Coehlo's The Alchemist, and there was also a Santiago in Anne Rice's Interview with the Vampire.

Santiago

Sullivan is a jaunty Celtic three-syllable name, with a real twinkle in its eye. It was immortalized in the 1930s classic film Sullivan's Travels and was chosen for one of Patrick Dempsey's twin boys. Nickname Sully is equally jaunty.
 The third most common surname in Ireland, Sullivan's heritage dates back to the third century. Countless distinguished surnamed Sullivans include Sir Arthur, half of composing team Gilbert & Sullivan, Helen Keller's teacher Annie, Chicago architect Louis, early boxer John L. and dour columnist/TV emcee Ed.
 Other celebs with boys named Sullivan: singer Tom Waits and actor James Marsters. Heroic pilot Chesley Sullenberger is known as Sully, and a featured character in Pixar's Monsters, Inc. and Monsters University was Sullivan.

Sullivan

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

Valeriano

alyshadragonfriend's list "Fancy Names For Boys" of 28 great name ideas: Aeon - Valeriano!

Fancy Names For Boys

These names are fit for a fancy young gentleman. They are long and often formal sounding. Enjoy.