Caius is classical and serious but also has a simple, joyful quality. There was a third century pope named Caius, as well as an early Christian writer, several Shakespearean characters, and a Twilight vampire. We would pronounce the name to rhyme with eye-us though at Cambridge University in England, where it's the name of a college, it's pronounced keys.

Eric is derived from the Old Norse name Eiríkr, from the components ei, meaning "ever," and ríkr, "rule." It was adopted by English speakers in the mid-nineteenth century, who were already familiar with the exploits of the tenth century Viking navigator and discoverer of Greenland, Eric the Red. Erik is an alternate spelling and the preferred form of the name across much of Europe.

Paul is an ancient name for boys -- popular in Roman and medieval times -- that's not very fashionable now, which can work in its favor, scarcity balancing simplicity.

Riley -- one of the most popular unisex names -- is trendier now for girls though for boys it's a classic, ALWAYS ranking in the US Top 1000.

Though ancient, Marcus now sounds more current than Mark, in tune with today's trend towards us-ending Latinate names.

Garrett, also spelled with one 't', is an Irish-inflected name that was in the Top 100 in the nineties, but has now slipped in popularity.

Lauren was derived from Laurence, an English name from the Roman family name Laurentius, meaning "from Laurentum." Laurentum, an ancient Italian city, got its name from the Latin word laurus, meaning "bay laurel."

Rebecca is a name representing beauty in the Bible, an Old Testament classic that reached the heights of revived popularity in the seventies but is still a well-used choice. It derives from the Hebrew name Rivkah, from the verb ribbqah, meaning "noose." The biblical Rebecca was the wife of Isaac and the mother of Esau and Jacob. Rebekah was a common spelling of the name in the Bible.

Cute kid with freckles, bouncing a Spalding ball. Cool couple Helena Bonham Carter and Tim Burton put the name Billy Burton on their son's birth certificate. While the classic William, name of the future king of England, may in fact be German, the nickname Billy along with such other classic short forms as Jim and Joe are authentically English names for boys.

The Italian Gianna undoubtedly owes much of its popularity in the US to its status as an honor name for John. Before the importation of Gianna, there was no truly workable feminine form of John, so Gianna found widespread favor among American parents with Italian roots and far beyond.

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 presidential Tyler rocketed up popularity charts in the late 1980s and early 1990s (it ranked Number 9 for that entire decade), along with cousin Taylor, becoming almost pandemic across the land-- and to make matters more confusing, both (especially Taylor) have been used for girls as well.

Victoria is the Latin word for "victory" and a feminine form of Victor. It is the name of the ancient Roman goddess of victory, the equivalent of the Greek Nike, and also a popular third century saint.

Chic in the fifties, now kept in the public eye mainly by actress Zellweger. Variations include Rene, Renae, and Renny.

Alec, though an old nickname for Alexander, is much fresher sounding than Alex, with the additional advantage, at least to some parents, of being distinctly male (there are as many girl Alexes these days as there are boys). While Alec has a clipped British image, it's actually one of the classic Greek names for boys, by way of father name Alexander.

Ephraim is an Old Testament name we would place high on the list of neglected Biblical possibilities, solid but not solemn.

Siobhan is the Irish variation of Joan, which is derived from the ancient Anglo-Norman name Jehanne. In this way Siobhan is indirectly related to the name Sinead—the Irish form of Jeannette, which also derived from Jehanne—although Sinead is not a nickname for Siobhan. Siobhan was the name of several early Irish queens and was introduced to the American public by the actress Siobhan McKenna.

Carmen has long been associated with the sensuous, tragic heroine of Bizet's opera, based on a novel by Prosper Merimee; more recently it has called to mind two other bombshells: Carmen Miranda (born Maria) and Carmen Electra (born Tara), as well as the great jazz singer Carmen McRae. In the celebrity baby name world, this classic Spanish name for girls was used by Hilaria and Alec Baldwin for their oldest daughter.

Everything ella, from Ella to Bella to Arabella, is red hot right now. Bella is one of the most, well, beautiful girl names starting with B. It carried a hint of a nice Old World grandmotherly veneer, until it became attached to Twilight's Bella Swan.

Sam has long been used on its own for boys, as accepted standing by itself as it is as a short form of Samuel. Straightforward and down-to-earth, Sam is the name of the son of the co-stars of The Americans, Keri Russell and Matthew Rhys. Sam is one of the most popular names that start with S in the Western world, ranking higher in several European countries than it does in the US, where it's trended downward since the 19th century, though it's always been in the Top 1000.