Names That Mean Resolute

William was such a popular name, thanks to the Conquerer, in early England that it gave rise to a range of nicknames, including the distinctly Scottish Wilkie. Heard mostly as a surname these days, it's the middle name of Sarah Jessica Parker and Matthew Broderick's son James and the first name of writer Collins. While Wilkie could make an adorable short form for a little boy, we'd recommend a more substantial full name such as, well, William.

Wylie is one Celtic surname with as much appeal for girls as for boys. Wylie is ripe for spelling variations: Wiley is as appropriate as Wylie but when you spell it Wylei, as Corey Parker did for his son, you're getting into yooneek naming territory.

The cute short form gained prominence when it was used for young Prince William of England.

Classic Wilhelmina is still the dominant form of this name, but the more intuitive, streamlined Willamina is rising alongside it. The phonetic spelling eliminates some of Wilhelmina's bulk, taking it from geek-chic to modern feminissima.

It's tempting to think of Gui as the Spanish form of Guy, but it's short for Guillermo.

This form of Liam ranks in Puerto Rico's Top 100, and is also popular with French-speaking parents in Europe and Canada.

With a sound that brings to mind at once "whim," "vim," and "win," this is one Dutch boys' name with serious potential for use in the English-speaking world.

If you want to go waaaaay beyond William, consider this Welsh form, which can also be spelled Gwilym, Gwilim, or Gwillym.

The Wylie spelling (with that feminine Y) is much more common among girls than Wiley, but both have been climbing the ranks. Could Wiley be the next Riley?

A Saudi Arabian royal name that has remained within its own culture.

A great choice for a native Swedish speaker, but not as user-friendly as some of the other international short forms of William — Pim (Dutch), Gwil (Welsh), and of course, Liam (Irish).

Sometimes heard in Scotland, where its heyday was in the times of Robert Burns and Sir Walter Scott, here we would prefer the Germanic version, Wilhelmina, brought into the spotlight by the conniving character on "Ugly Betty."

Intriguing short form of Guilherme, heard in Portugal and Brazil. Guion Bluford was the first African American to go to space.

Cooler than Ernest and less Muppet-like than Ernie, the Finnish Erno may be the best way to honor someone with an Ern- name.

Alternate form of Ville, also seen as a surname.

Maori form of William

Scottish surname-turned-nickname from William or its female equivalents. Wilkie has ranked for girls just a handful of times since US baby name records began.

Yavuz Selim was a 16th-century sultan of the Ottoman Empire, which grew dramatically over his eight-year reign. Boys in Turkey are given this double-barreled first name in his honor.