Lost Girl

Will has definitely replaced Bill, not only as a nickname for William but as a stand-alone name as well, partly thanks to England's Prince William, also known as Wills.

If you're looking for a name that's light and breezy, this could be it. A name from mythology: Zephyrus/Zephyr was the Greek god of the west wind-- with many European variations, it's a name that's frequently seen in computer and video games, is a character in the children's book Silverwing, and appears in the Babar books--as a monkey.