An fearsome old Norse name with a long history in Scandinavia. It's gotten a boost in the States from popularity of the History Channel drama "Vikings," in which the protagonist is named Ragnar. Ragnar Lodbrok (meaning "shaggy pants") was a legendary warrior whose story was told in the Viking sagas. Ragnar also recalls name of the Norse Judgment Day, Ragnarök.

European royal name, and to Americans a place-name evoking the majestic mountain in Washington state.

Rainer is one of those baby names that is still under-the-radar but has been quietly gaining traction: The number of boys who've received the name has doubled in the past decade, to just under 50. Part nature name and part traditional German name for boys, Rainer can claim a place among the two-syllable r-ending baby names so fashionable for boys today.

Variant of Brunhild, still clad in heavy armor. Though the heroine Brunhilda of Quentin Tarantino's recent film Django Unchained may have given this version of the name new appeal.

Especially for parents of Scandinavian descent, Sven is an accessible and attractive name with an appealing mix of strength and swagger. It comes from the ancient Swedish tribe, the Sviars, who gave their name to Svealand, which later morphed into Sweden.

Though to most Americans Viggo is a one-person name attached to intense actor Mortensen, it is actually an old Norse name dating back to the Vikings, and is currently the 32nd most popular appellation in Sweden. Viggo Mortensen is a Jr., sharing his name with his Danish father.

Loki is the shape-shifting, gender-bending god of mischief in Norse mythology. Taking several animal forms, from a salmon to a seal to a fly, Loki is alternately friend and foe of the gods.

One of the most popular names in Scandinavia, Freja--or Freyja--was a major deity of Norse paganism. Beautiful, blonde and blue-eyed, she was the goddess of love, beauty and fertility. In the US, the name is most likely spelled Freya.

Frey is the handsome Norse fertility god, a worthy namesake. Frey remains rare in the US even as the similar Freya picks up in popularity.

Benno is a cool name in its own right -- there was a tenth century Saint Benno -- though it is also used as a lively nickname for Benjamin. Saint Benno of Meissen is the patron saint of anglers and weavers and, strangely enough, alliteration.