Baby Boy

Jonas has a slightly more grandfatherly image than the English version of his name, but that only adds to its retro appeal. And though it may lag behind Jonah in this country, Jonas is riding a huge wave of popularity in Europe, where it ranks highly in Germany, Switzerland, Austria and Norway.

Joseph is one of the most classic names in American nomenclature, popular with parents from many ethnic backgrounds and having dual-religious appeal.

Jude is a modern star, maintaining a steady level of popularity -- but not TOO much popularity -- for more than a decade now. Thank Jude Law and the great Lennon-McCartney song "Hey Jude", double-handedly responsible for propelling Jude up the charts.

Keir is a single-syllable name that packs a lot of punch, might suggest -- thanks to its similarity to the word care -- a caring person. Sir Keir Rodney Starmer is a British politician and head of the Labour Party since 2020. Keir Dullea is an American actor who starred in 2001: A Space Odyssey.

Kellan Lutz is the attractive young actor who plays Emmett Cullen in the Twilight series.

Chosen for their first son by musical couple Gwen Stefani and Gavin Rossdale, this Jamaican place and elegant British surname also boasts the more regal yet user-friendly short form, King.

Knox is an old Scottish surname that Brad Pitt (whose great-great-grandfather was named Hal Knox Hillhouse) and Angelina Jolie took out of the back cupboard, dusted off, and elevated to coolness--to the point where it entered the popular baby names list in 2009. Knox now ranks among the most influential celebrity baby names.

Lachlan is as Scottish as haggis and tartan plaid kilts—a favorite used throughout England, Scotland, Australia, and New Zealand—and just beginning to be noticed in the US: it reached the Top 1000 for the first time in 2013. An ancient name, Lachlan was originally used to describe the Viking invaders of Scotland, those from the land of the lochs.

St. Landry was a seventh century bishop of Paris, founder of the city's first hospital. The name is more familiar in recent years thanks to legendary Dallas Cowboys coach Tom Landry, an association that makes this a sports hero name, as well as a thoroughly masculine one. Landry is also in use for girls in the US. Landry is one of the oldest surnames in France, dating back to the medieval period, and is particularly popular among Cajun-Americans. It has been on the Social Security list since 2010.

Lennox is one of the hottest unisex names of recent years, and this spelling retains the appealing surname vibe and cool -x ending.

Leo is a strong-yet-friendly name that was common among the Romans, used for thirteen popes, and is now at its highest point ever in the US thanks in part to Leonardo "Leo" DiCaprio.

Leonidas is an ancient name that has started rising again along with centuries-old names such as Augustus and Cato. The original Leonidas was the most famous of Sparta's warriors, sacrificing his life at the Battle of Thermopylae; there is also a saint Leonidas.

This aristocratic, somewhat formal Germanic route to the popular Leo is a royal name: Queen Victoria used it to honor a favorite uncle, King Leopold of Belgium. Though Leopold sounds as if it might be a leonine name, it's not really a relative of such choices as Leon, and Leonard.

Lewis is the best spelling to choose if you want this pronounced with the S. Lewis has been in the Top 5 in Scotland since 2000, and is one that parents in the U.S. are just beginning to rethink.

The graceful, natural image of the verdant shade tree transcends any connection with President Johnson.

Lionel is one leonine name that hasn't taken off as cousins Leo and Leonardo have, though it did reenter the Top 1000 in 2010 after several years away; it was at its highest point in the 1920s and 1930s.

Luc is the sleeker Gallic cousin of Luke, and if you want to know the difference between their pronunciations, just watch Kevin Kline's hilarious description in the film French Kiss. Peter Gabriel and Sean Patrick Thomas picked this version for their sons.

The related Lucas and Luke are both hugely popular boy names in the US and internationally, and now Luca has joined them on boys' popularity lists around the world.

Luka is one of the coolest names in recent years, following suit of its cousin Luca which is now a Top 50 name. Luka is on its way up the charts and may crack the Top 100 in the very near future. Luka has a lot going for it — it is following the tails of Lucas and Luke which have been enjoying significant popularity for years. It also boasts the very current "-ah" ending sound that feels fresher than ever for boy names, from Noah to Ezra to Judah. The "k" in the middle gives an extra edge as well.

An English surname-turned-first-name whose most famous bearer is former US president Lyndon B. Johnson. His appointment in 1963 caused a huge spike in use for his unusual name the following year, pushing it to its historical peak of #347 in 1964. However, the year after his exit from the Oval Office, it dropped back below the Top 1000.