Acacius is a Latinized form of the Ancient Greek Akakios and can be interpreted to relate to the same root as the name Acacia, for the thorn bush, or Akakios which means "not evil." With the modern taste for ancient names that end in "us," this obscure but attractive choice may have a chance of new life. Acacius is the name of three early saints.

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.

This name of a Roman emperor and of a sedating plant is still used quietly, given to about a dozen baby boys in the US last year. It has a strong, rhythmic sound and could make a modern-feeling honor name for grandma Valerie.

The name of an important ancient Roman emperor, Tiberius might sound a bit heavy for a modern boy to carry, but with the rise of Atticus, Tiberius and brothers begin to feel more baby-friendly, much in the same way as Old Testament names like Elijah and Isaiah have been rejuvenated.

Softer and smoother than Alexander, this classic Spanish name for boys has made a seamless transition to this culture. Adding to its current impact: the Lady Gaga song Alejandro .

A vibrant, operatic choice with plenty of flair and plenty of familiarity too. Popular in Italy, Chile, Uruguay, and Brazil, it also ranks in the Top 500 in France and the US. Operatic tenor Luciano Pavarotti and football manager Luciano Spalletti are two notable bearers

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.

Aurelian is an ancient name gaining contemporary visibility along with many other forms of the Ancient Roman Aurelius, including Aurelia and Aurelio.

Archimedes of Syracuse was a famous Ancient Greek thinker, especially in the fields of mathematics and sciences. He made important contributions to geometry and calculus. His name was a perfect choice, meaning "master planner" or "master thinker".

This rarely used New Testament name could make an unusual route to the cool nickname Nico. Borne by the person who helps to entomb Jesus following his crucifixion, it has the powerful meaning of "victory of the people" and is the Latinized form of the Ancient Greek Nikodemos.

For every Tio Salvador in a Latino family, there's a Zio Salvatore in an Italian one. Having always ranked in the US Top 1000, it is in danger of falling off the charts very soon.

Like Horace, Horatio is a variation on the Latin Horatius, but its Shakespearean and optimistic Horatio Alger pedigree makes it an attractive up-and-comer, especially with its cool final o. A modern reference is the charismatic TV character Horatio Caine played by David Caruso in CSI: Miami.

The name of the brave, resourceful hero of Homer's epic saga has almost always been considered too weighty for a child to bear, but at this point, some brave, resourceful parents out there might be willing to take it on.

A kindly, virtue-adjacent name, it appears in Shakespeare's Romeo & Juliet, borne by the peacemaker friend who persuades Romeo to go to the party where he meets Juliet. Alas. A bold choice but with familiar nicknames Ben, Lio, and Bo.

This distinguished name still feels a bit ancient, but with the rise of such former graybeards as Jeremiah and Elijah, it also sounds child-friendly again, as does the Latin-Greek form Zacharias.

In Greek mythology, Hyperion is one of the twelve Titans: children of Gaia (Earth) and Uranus (Sky). Hyperion presides over heavenly light, and is the father of Helios (Sun), Selene (Moon), and Eos (Dawn).

The name of a mythically handsome youth – loved by Selene, the moon, who bore him fifty daughters. If you're looking for a mythological name for your son, this might make an excellent choice both rare and appealing.

For anyone seeking a more unusual version of Alexander, this is a real winner.

Azariah is a rarely used biblical name that moves way beyond Adam and Abraham; its pleasant sound makes it no surprise that parents have discovered it in recent years.

Ebenezer is the name of a biblical place --the stone set up by Samuel to mark his victory over the Philistines--rather than a person. It was adopted by the British Puritans as a first name and then exported to America, where it had some early popularity, even entering the Top 1000 in the 1880s.