Pokemon Crystal

Son of Irving.

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.

Though some might find it a bit heavy-booted, Ivan is one of the few Russian boys' names to become fully accepted into the American naming pool.

Jack may have fallen from its Number 1 place in England, but in the US it's as popular as it was at its height in the 1920s and 1930s. A durable, cheery, everyman form of John, Jack ranks as one of the most popular boy names starting with J.

Though every Spanish student knows that the male classic is pronounced HY-me, for girls this is a straight homonym for Jamie, a favorite ambisexual 1970s nickname name. Another way to think of it is as a variation of the French "J'aime" (I love).

This unpretentious, accessible, and optimistic ("everything's jake" -- meaning OK) short form of the top name Jacob is itself widely used, though more parents these days are opting for the full name Jacob. Jake (born Jacob) Gyllenhall is its most prominent current bearer.

Has lost all trace of its French accent.

Jared is an Old Testament name that has been popular for decades--it was revived in the sixties via TV westerns-- and is still an appealing option.

Jasmine was derived from the Persian word yasmin, referring to the jasmine flower. Scented oil was made from the plant, and it was used as a perfume throughout the Persian Empire. Variants include Jazmin, Yasmin, Yasmine, and Jessamine.

Jason, the Number 3 name for the entire decade of the 1970s -- thus the title of our original baby-naming book, Beyond Jennifer & Jason -- is more likely to be dad's name now than baby's, but it's still a widely used name.

Cowboyish short form that's both macho and cool. Got prime time exposure on The West Wing.

The ultimate dad name.

The mostly Americanized version of Geoffrey was a trendy mid-century hit, with nickname Jeff the epitome of cool. Jeffrey entered the pop list in 1934 and was a Top 20 name from the mid-fifties to 1978.

This one-time trendy form of Jeremiah hovered just outside the Top 25 throughout the 1970s and 80s.

Jerome has a bespectacled, serious, studious image, just like its namesake saint, who was a brilliant scholar. St. Jerome is the patron saint of students, librarians, and archaeologists.

Jerry is one of those short forms that, like Mike and Debbie, rose to popularity on the coattails of their formal versions. The equivalents today are nickname names like Ellie and Theo.

Peaked in the 1940s, but still an amiable classic, a la Joe and Tom -- though rarely used on its own.

Every other little kid's name in 1957 but few Jameses are called Jimmy today; they're more often James or Jamie.

Still evokes the spunky image of the character in Louisa May Alcott's Little Women.