Rugged but gentle at the same time, Cassian is a saintly and stylish choice that was derived from the name Cassius. Before 2017, it was an obscure choice, given to a tiny handful of boys each year. As of 2023, however, it's become one of the top ten fastest-rising names in the US, more than doubling in usage since 2022 and edging closer towards the Top 500.

One of the most romantic of appellations, Caspian is a geographical name referring to the large salty sea between Asia and Europe. It's also the name of the hero of C.S. Lewis's beloved Chronicles of Narnia, Prince Caspian.

Cool and charming, with plenty of flair and sophistication, Julian manages to strike the balance between being a sensible classic and contemporary choice. Appealingly international, it is no wonder Julian is a rising star.

Adrian is one of those names that’s easy to picture on all kinds of people. From an active and energetic five-year-old to your great grandpa, from the coolest, breeziest guy you know, to the quiet, serious one, it’s no wonder Adrian has always made the US Top 500 since the early 20th century.

Vivian, once an elderly lady name, is on the rise, along with all forms of girl names that mean life — from Zoe to Eva to those who share the vivid Viv syllable. It was one of the fastest-rising names of 2024, vaulting into the Top 100 in 2023.

Sebastian is an ancient martyr's name turned literary, and Little Mermaid hero—think Sebastian the Crab—that's more popular than ever, as a classic-yet-unconventional compatriot for fellow British favorites T Theodore and Oliver.

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

Damian has sidestepped its demonic horror movie overtones, leaving a basically friendly and charming Irish image. A well-used upper-class name in England, it is growing in popularity here.

A name that sounds both arty and rough-and-tumble, Bastian can be used as either a short form or a stand-alone variant of elegant Sebastian. Also spelled as Bastien, Bastiaan, and Bastían, it notably appears in the German fantasy children's book, The Neverending Story , which features a young boy character called Bastian Balthlazar Bux.

This name of a Roman emperor and of a sedating plant is still used quietly, given to about a dozen baby boys in the US last year. It has a strong, rhythmic sound and could make a modern-feeling honor name for grandma Valerie.

An underused classic that has proved surprisingly unisex over the last few decades, being given to roughly the same number of baby girls and boys in the US from the 1970s to the 2000s. For a girl, Marion has a sturdy old-fashioned charm.

Fabian is the ancient name of a saint and pope that also has Shakespearean cred as Olivia's servant in Twelfth Night and more recently made an appearance in Harry Potter. In the U.S. Fabian became best known via the 1960s teen idol/singer who went solely by his first name.

Gillian is a name that was in common usage in Great Britain until the 1970s, when it dropped out of the Top 100 and is yet to return. Until recently, it had not crossed the Atlantic in significant numbers, except in the short form Jill.

Fun fact: Marion was the birth name of movie star John Wayne. Although commonly thought of as a female name today, it was actually more popular for boys until the late 19th century, and was given to roughly equal numbers of boys and girls throughout the 1970s-2000s.

Marian's (and sister spelling Marion's) image has gone through a sea change of late, recalling less middle-aged matron and more Robin Hood's romantic Maid Marian. Some influences: the SJ Parker-M. Broderick twin daughter Marion and the glamorous French actress Marion Cotillard.

Most parents would find this old Roman name pretentious compared to the more accessible Adrian, but some history buffs just might want to commemorate the enlightened emperor.

Julien is the handsome French form of Julian, which derives from Julius, a Roman family name. Its origin is shrouded in history, but possible roots include Latin iuvenis, meaning "youthfu"; Greek ioulos, meaning "downy-bearded"; or Jovis, a form of Jupiter, which means "sky father".

Xavian is a masculine name representing a modern variation of Xavier, which itself derives from the Basque place name Etxeberria, meaning 'new house.' The name gained prominence through St. Francis Xavier, a 16th-century Spanish missionary. Xavian combines the distinctive 'X' beginning of Xavier with the flowing ending of names like Adrian or Julian, creating a contemporary feel while maintaining historical connections. The initial 'X' gives the name an edge of uniqueness, while the overall sound remains approachable. Growing in popularity since the early 2000s, Xavian appeals to parents seeking modern-sounding names with subtle historical roots. The name projects qualities of strength and distinctiveness while offering the friendly nickname option 'Xavi.' Its relative rarity ensures individuality without being difficult to pronounce or understand.

Vivien (Scarlett O'Hara) Leigh was born Vivian. Some sources give Vivien as a relative of the Irish goddess name Bebinn and a literary name invented by Tennyson. Others say it's related to the Latin-based Viviana, meaning life. This spelling of the name is as legitimate as many others.

An alternative spelling to the sleeker Maximilian, briefly popular in the US in the 90s and early 2000s, and a well used spelling in England and Wales until recently. It ultimately comes from the Latin maximus meaning "greatest".