Possibles

Adam -- a primal Old Testament name -- was revived as a 1960s cowboy name. Adam is not as popular as it once was and feels ready for a respite, replaced by newer A names like Aidan/Aiden, Avery and Axel. Its most prominent current bearers include Adams Sandler, Levine, Brody and Driver -- who plays a character named Adam on Girls.

Albert has acquired a new gloss as one of the top royal baby boy names, a considerable upgrade from its serious, studious image (think Einstein, Schweitzer).

The attractive Euan and Ewan are just coming onto the U.S. radar, via actor Ewan MacGregor and Harry Potter's Euan Abercrombie.

Innis is the name of an island (and Gaelic word for island) which became a Scottish surname and clan name before being used as a first. It hasn't been heard much in the U.S., but could attract more attention with the growing popularity of Latin s-ending boys' names such as Atticus.

A play on the spelling of Isaac that's somehow been in the Top 1000 every year since 1880. (If only by a hair: In both 1926 and 1962, it came in at number 999.) It hit an all-time peak at Number 377 in 2007, and has slumped a fair bit in the ensuing decade.

Leon is one of the leonine names that is extremely hot in Europe right now. Although it peaked here in the 1920s, it is slowly making its way back, and it could climb further with parents wanting a more serious and studious alternative to Leo.

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.

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.

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.

Pronounced like Tom, but not everyone will know that.