An aristocratic and stately Germanic route to the popular Leo, Leopold is a royal name: Queen Victoria used it to honor a favorite uncle, King Leopold I of Belgium. These days, this royal tie may be seen as a drawback to the name, owing to the cruelty of King Leopold II's rule over the Congo, though it remains popular in Austria, Poland, and France (as Léopold).

Loyal is one of the few virtue names suitable for boys, an honorable and principled Boy Scout-esque appellation with a surprisingly long and distinguished history.

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.

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

Levi, lighter and more energetic than most biblical names, with its up vowel ending, combines Old Testament gravitas with the casual flair associated with Levi Strauss jeans.

Lucian is a sleeker, more sophisticated version of Lucius that is climbing in tandem with other Lu-starting names.

Luke is a cool-yet-strong Biblical name with a relaxed cowboy feel, which has been on the rise since the advent of Luke Skywalker.

Kate and William shocked the world when they announced that they'd named their third child Louis, or Prince Louis Arthur Charles, to be more precise. But we've been predicting a comeback for this classic name for a long time.

Lucifer is the name of the archangel cast into hell and while theologians disagree on whether he and Satan are separate beings, it long been on the list of forbidden names for religious and non-religious parents alike. With connotations of hell and devilry so strongly attached to it, the name is officially banned in some places, including New Zealand.

Can Linus lose its metaphorical security blanket and move from the Peanuts page onto the birth certificate? We think it has enough charm and other positive elements going for it for the answer to be yes.

Lincoln cracked the Top 50 for boys' names for the first time in 2016, more than 150 years after the death of its most famous bearer. This is especially remarkable because, as crazy as it seems now, Lincoln was deeply out of fashion as recently as the late 90s, consistently hovering near the bottom of the Top 1000.

Leander was once an almost unknown name, however, with the popularity of Leo and the rise of Leandro, it now feels like a perfectly accessible alternative to Leon or Alexander. In Greek legend, Leander was the powerful figure who swam across the Hellespont every night to visit his beloved Hero, a priestess of Venus.

Lewis is the best spelling to choose if you want this pronounced with the S. It was a Top 100 name in the US from 1880 to 1930, reaching Number 30 in 1880 and while it has declined in use, it has remained in the Top 1000 since stats began.

Luan is a handsome, unusual boy's name with surprisingly diverse origins. It's a rare Portuguese name meaning "moon", an Albanian name meaning "lion", a Vietnamese name meaning "justice; ethics", and a Gaelic name meaning "warrior". It may also relate to the French and Breton Elouan ("light") or the feminine Luanne ("light+grace").

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.

Typically spelled as Lonán in Ireland, Lonan is its Manx form, though it could also be considered the anglicized form too. The name comes from the Irish lon meaning "blackbird", paired with a diminutive suffix, making this a charming nature-related choice that could make a nice Logan/Conan alternative.

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 Welsh surname was taken up as a first in the English-speaking world in the early twentieth century, originally as a nickname for someone gray-haired. The original Welsh nickname was Llwyd, pronounced LHOO-eed, and is the Welsh word for the color.

A growing number of high-profile (and other) parents are choosing to honor their musical idols, such as Hendrix, Presley, Jagger, and now Lennon.

This cool and quirky short form of the suave Ludovic could be an even-more-adventurous spin on Nico and Hugo.