Children I met in 2015

Hasan is a significant Muslim historical figure — he was the grandson of the Prophet Muhammad and the son of Ali and Fatimah. Shia Muslims consider Hasan a martyr — he died after being poisoned by his wife.

Hugo, the Latin form of Hugh, has more heft and energy than the original -- and of course we love names that end (or begin, for that matter) with an o. This one is especially appealing because it's backed up by lots of solid history and European style.

Isaac has shaved off his biblical beard and leaped into the upper echelon of popular boys' names, outrunning cousin Isaiah. A favorite of the Puritans, Isaac has never dipped below Number 400 on the US list of top boy names.

Isla is a hit name throughout the English-speaking world but hasn't found the same popularity in other western countries, perhaps because its spelling and pronunciation don't make sense for those whose native language is not English. Think island without the final two letters.

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.

The quirky, offbeat and energetic botanical name Ivy is enjoying a deserved revival, propelled even higher by its choice by high-profile parents Beyonce and Jay-Z for daughter Blue Ivy. Ivy is also traditionally used at Christmas, make this one of the perfect names for December babies.

Jackson is one of those names that's much more popular than you think, coming in near the top of our annual Playground Analysis, which ranks names by grouping all their spellings together. Last year, nearly 17,000 baby boys were named Jackson -- along Jaxon, Jaxson, Jaxxon, Jaxen, Jaxyn, Jaxsen, and Jaxsyn -- which counted together makes it the Number 3 boys' name.

Reminiscent of 70’s favorite Jason, and sharing sounds with the perpetually popular James, Jayden is one of the more enduring members of the -ayden trend.

Jenna is overheated, but Jemma is still cool. Jemma and Gemma are most heard in Australia but are increasingly used in other countries.

John reigned as the most popular of all boys' Christian names for 400 years, from the time the first Crusaders carried it back to Britain until the 1950s. Then American baby namers finally seemed to tire of this straight-arrow, almost anonymous John Doe of names, replacing it with fancier forms like Jonathan and the imported Sean and Ian.

The ultimate midcentury nickname, retaining a good measure of retro charm, was chosen for her son by Mira Sorvino.

Jonathan was derived from the Hebrew name Yehonatan, eventually contracted to the modern Yonatan, meaning "gift of Jehovah." It comes from the elements yeho, in reference to God, and natan, meaning "to give." In the Old Testament, Jonathan was the valiant eldest son of King Saul, and it was his friendship with brother-in-law David that gave rise to the expression "Jonathan and David" to describe devoted, steadfast friends.

Wildly popular in the 1960s and '70s, Julie is no longer anywhere near as stylish as the name's longer forms. Try Juliet, Juliana, or even the more grownup Julia.

There are lots of Kathy moms and grandmas but very few babies, most of whom are now called Kate or Katie.

The hurricane blew this one out of the realm of possibility.

Keira is an attractive girls’ name that's gotten a huge boost from the meteoric rise of Keira Knightley. Original spelling Kiera, which relates more directly to the male Kieran, was the more popular form until the rise of Keira Knightley reversed the order. Both are Anglicized versions of the Irish Ciara.