William: From the German will, meaning will or desire, and helm, meaning helmet or protector. Thus, I choose to interpret it as protector of desire
Arnup: The name has been traced through ye olde English 'Arnop', and even further to the Dutch Arnieghp. It has always been merely a surname, with no other meaning
According to Urban Dictionary:
William:
A charismatic, charming, handsome, respectful and chivalrous gentleman of high upbringing. The perfect boyfriend. A true cunninglinguist. An amazing, unique, funny guy. knows when to be serious but rarely do you see this side of him.
(I kid you not: http://www.urbandictionary.com/define.php?term=william)
Arnup: Nothing at all