For centuries this name was associated primarily with the towering figure of Italian Renaissance painter-scientist-inventor Leonardo da Vinci, and was scarcely used outside the Latin culture.

The independent Alex has become a classic in its own right. One of the truest unisex names, Alex is used almost equally for both sexes. Alex is used both on its own and as a short form of formal names of both genders, such as Alexander, Alexandra, and Alexis.

Lost in limbo for decades and decades, Elsa now stands a good chance of following along in the progression from Emma to Ella to Etta, thanks to the ice queen heroine who "Let It Go" in the wildly popular Disney movie Frozen. The name shot all the up to Number 286 (its highest ranking since the 1890s) in the year after the release of the movie, though it's now dropped back down the list in the US.

Widely heard in both Italian and Spanish households, Sergio and his many international brothers are rooted in Sergius, one of the original Roman family names. The meaning is unknown, but possibly is related to servant or protector.

Pedro is one of the most familiar Spanish names for boys, via baseball star Pedro Rodriguez and many others.

Valeria -- the original form of the name, used by early Christians --has been experiencing significant popularity in recent years. While Valeria was nearly always on the charts, the name peaked in 2009 at #72, surpassing the longtime Franco-American version Valerie. Today Valeria and Valerie are at about equal rankings, sitting in the 150s.

Carlos is the Spanish and Portuguese variation of Charles, which has been used in solid numbers in the US for as long as data has been kept. Carlos has never fallen out of the Top 600, but peaked from the 70s-early 2000s. Today Carlos is still within the Top 200. Notable namesakes include musician Santana, writers Fuentes and Castaneda, and numerous athletes. Carlos Irwin Estevez is the birth name of Charlie Sheen.

While Charlotte and Caroline are considered stylish and classic members of the Charles family, this Germanic form peaked in the US at Number 76 in 1965. It fell out of favor in the 2010s, but recent years have seen it re-enter the Top 1000.

Juan, the Spanish version of John, is ubiquitous in the Spanish-speaking world, and is familiar internationally via such references as Don Juan and San Juan.

Romantic, and classy, this variation heats up Caroline and modernizes Carol, adding a southern accent. A popular choice in Portugal, Spain, Mexico, and Italy, it recently entered the US Top 500.

The single T version of Matias is, like Mateo, the Spanish variation of the Hebrew Biblical Matthias or Matthew, while the double T version as in Mattias and Matteo is usually Italian.

This name, whose sweet and fragrant floral essence has always been widespread across the Near Eastern world, has now landed on US popularity lists in a variety of spellings. It's been dropping precipitously over the past few years, though, perhaps due to a combination of tensions in the Middle East and the fading fashion status of Jasmine itself.

Mike Tyson put a twist on his own name by naming a son Miguel. It's the first name of Cervantes, the great Spanish novelist and poet who wrote Don Quixote.

Elisa is one of the most appealing of this contingent of Elizabeth-related names. In the US, Eliza is much more stylish these days, but Elisa is very popular internationally — especially in Europe and Latin America.

Cristina is one case where the streamlined version feels more alluring. Cristina is found more often than Christina in many European countries and cultures, including Spanish- and Portuguese-speaking Latin and South America.

Sharper and steelier than Martha, but with the same underused vintage appeal.

Alberto is the Italian, Spanish and Portuguese variation of Albert and lends a more unusual and fashionable edge to this name which is still a grandpa name to many.

More colorful than Blanche, but blanker than Bianca.

This alternate spelling of Yusuf leads the way in Spain, where it is among the 100 most popular baby names. In the US, streamlined Yusuf reigns.