Karl

Also, can confirm previous comments that Karl in Scandinavian language (Swedish at least) means 'man' or 'guy' - i.e. sayings such as "en bra Karl reder sig själv" meaning a good man takes care of himself... others too but can't think of them now :)

Karl was the German god of the winds.

I've read that the origin of the name is linked to the word "housecarl" which was the word used to describe an old warrior chieftain's bodyguards.