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.

Reminiscent of the Old West, with rugged charm and a gentle, easy-going feel, Wesley has long been a staple on the US charts.

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.

Tobias is one of a number of s-ending boys' names that are riding a wave of popularity. With its Old Testament-Dickensian feel, it's a name with a distinguished pedigree.

Amias is a friendly and attractive sounding name, with a lovely meaning and knightly feel. Though it might sound like a Biblical name, similar as it is to Amos and Ozias, it is in fact a Latin name, ultimately from the elements amicus or amo meaning "friend" and "love" respectively.

Though ancient, Marcus now sounds more current than Mark, in tune with today's trend towards us-ending Latinate names.

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.

Isaiah, like brethren Isaac and Elijah, is a once neglected biblical name now firmly back in favor, already surpassing such long-popular Old Testament stalwarts as Aaron and Adam. Isaiah has ranked on the US Top 1000 list for boys every year but two, 1969 and 1970.

Bram has an unusual measure of character and charm for a one-syllable name; it started as a hipper-than-Abe diminutive of the biblical Abraham, but is also an independent Irish and Dutch name, made famous by Irish-born Dracula creator Bram (nee Abraham) Stoker. Bram is currently Number 16 in the Netherlands; Bram Howard was a character on The West Wing.

Straightforward single-syllable name, though children named Lyle may get tired of hearing "Lyle, Lyle, Crocodile". Lyle was at the height of fashion in the 1920s, which makes him due for a comeback right about now. The double L certainly gives it a fashionable sound.

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.

Lars is a perfect candidate for a cross-cultural passport: it has been heard often enough here to sound familiar and friendly, yet retains the charisma of a charming foreigner.

A laid-back cowboy name which feels both cool and gentle, Dallas has ranked in the US Top 500 since records began in 1880. Never super popular but surprisingly never out of style, Dallas is given to nearly 1400 boys in the US every year.

This name of the archangel who protects those born under the sign of Capricorn is one of the most attractive and distinctive December baby names or January baby names. Cassiel is a little-known member of the increasingly popular Cass family, which includes Cassius, Cassian, and Cassia.

Finn variations of Phineas are becoming more popular because they create a more direct line to the nickname Finn, which is an ancient Irish name with its own pedigree. Finneas has been steadily growing in usage, with around 100 boys receiving the name each year in the U.S.

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. This spelling is the traditional form of Luke in various Eastern European countries.

Lúcás is the Irish Gaelic form of Lucas, ultimately derived from the Latin name 'Lucius,' meaning 'light' or 'illumination.' The accent mark over the 'u' indicates a longer vowel sound in Irish pronunciation. This name carries cultural significance in Ireland and among those with Irish heritage, representing a connection to Gaelic language and traditions. While less commonly seen outside Ireland, Lúcás offers parents an authentic Irish alternative to the more internationally recognized Lucas. The name combines historical depth with a modern, appealing sound, making it attractive to parents seeking a name with clear cultural roots and meaningful etymology.

Osias has a Latinate and biblical feel without making an appearance in the Bible. The related Ozias, on the other hand, is a form of Uzziah, found in the Greek and Latin Old Testament, and could make a distinctive path to the nickname Oz or Ozzie--both far cooler, in our opinion, than Oswald.

About 100 baby boys were named Lucio in the US last year, a number we expect to increase with the growing popularity of all names in the Lu family. It's a family united by sound, with three main branches.

Kassian may be seen as a Kardashianed spelling of the rising saint's name Cassian, which is a variation of Cassius, but it could also be considered the authentic Greek male form of Kassiani, the name of a female saint revered as a hymnographer. However you spell it, this is an attractive and unusual name virtually unused in the US -- though we predict that will soon change. If you're hunting for unusual yet stylish Greek baby names, variations of this name should be on your short list.