Hipstermania

The most popular of the number names used by Hispanic parents, open to all. Octavia and Octavio are two Spanish baby names that are moving out into the wider world.

Opal is on the verge of a repolishing, following other jewel names like Ruby and Pearl. A Top 100 name during the first two decades of the twentieth century, the opalescent Opal has a good chance of coming back as another O-initial option.

In the past, Orson has felt like a one-person moniker, tied to film director Orson Welles, who dropped his given name of George in favor of his more distinctive middle. While the Citizen Kane creator seemed to own the name during his lifetime, it's now an interesting possibility for any parent seeking an unusual yet solid name. It's started to appear to the celeb set too -- both Paz Vega and Lauren Ambrose have little Orsons.

Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers.

One of the first generation of surname names, along with Porter and Morgan, Parker's still one of the most appealing and remains firmly in the Top 100 for boys. About three times as many boys as girls get this occupational name. The association with Charlie Parker gives Parker itself a jazzy edge, and it also has a nature-related meaning. Rosie O'Donnell has a son named Parker.

Penelope is an unlikely 21st century baby name success story. Off the Top 1000 for 25 years, Penelope jumped back on in 2001 and has been heading uphill ever since, propelled by the trend for mythological names, Spanish actress Penelope Cruz, and some high-profile celebrity babies.

Percy is an adorable old name that is finally shedding its pampered Little Lord Fauntleroy image in this new era of boys with soft yet traditionally male names like Jasper and Elijah. Originating as an aristocratic Norman name, Percy became fairly widespread in England--and to some extent in the US--as an offshoot of the fame of the poet Percy Bysshe Shelley.

Actor Pierce Brosnan brings a strong helping of charm to this name. Pierce was actually a popular name long before Mr. Brosnan came along, from 1880 to the end of the 1930s.

Piper is a bright, musical name that entered the list in 1999, one year after the debut of the TV series Charmed, which featured a Piper, and it's been a consistent riser since. Piper Kerman is the memoirist whose prison experiences provided the basis for the hit Netflix series Orange is the New Black.

This version of the more familiar Paulina is occasionally used in the US, though some may see it as relating more to the word pole than to the classic Paul.

Castor's twin in the constellation Gemini. That final x makes this name modern and cool.

Britney Spears put this old-fashioned surname name back on the map when she chose it as her son Sean's middle name, which the family uses as his first.

Clint with a glint; used for flinty characters in old TV westerns and soap operas.

All the old ae/ay middle names for girls are back--Kay, Fay, Mae/May, --and Rae is one of the coolest, used as such by celebrities as Mark Wahlberg and Daniel Baldwin. Even more popular in the celebrisphere is the jazzy Ray spelling: among those who used it as their daughters' middles are Bruce Willis, Dermot Mulroney, Maggie Gyllenhaal and Peter Sarsgaard, Uma Thurman and Lee Lee Sobieski.

A surname occasionally used as a first, as in former attorney general Ramsey Clark. This spelling is now closely associated with the psychopathic Game of Thrones villain Ramsay Snow (later Ramsay Bolton), and so is probably best avoided as long as the show and books are popular.

Serious surname choices, the latter form known via award-winning author Reynolds Price.