Beatrix has a solid history of its own apart from Beatrice, with that final x adding a playful, animated note to the name's imposing history and stately vibe.

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.

Bruin is the Old English term for bear, taken from the Dutch word meaning brown. Bruin might be a sports fan's choice or an animal name in hiding. As a kind of hybrid of Roone and Bruno, it's definitely got some cool.

The alcohol-laced member of the Randy-Candy-Mandy sorority of 1970s to 80s nickname names; now pretty much on the wagon.

German painter and sculptor Bendix Passig bore this eye-catching name, a Frisian and German form of Benedict, also found as a surname.

Bastiaan is a common Dutch form of Bastian, a short form of Sebastian that stands on its own. While the double A is not intuitive for English speakers, the name is widely used in the Netherlands.

Stick with the original.

Bas is a fashionable name in its own right in the Netherlands, where it's been in the Top 10. Used throughout Europe, it may have a future here as a straightforward-but-charming nickname name. Baz is another, similar and more appealing possibility.