Surname Saturday: Cook

Okay, another week, another surname.  Today's surname is a fairly common name in North America, in fact Wikipedia cites this surname at 60th place in the list of most common surnames in the United States, belonging to just under 295,000 people in the U.S. (according to 2000 U.S. census figures).  I know about five generations of Cooks in my wife's ancestry, and all of them were born in the United States with the first that I know of born way back in 1781 in Pennsylvania.  So, let's find out more about the Cook line...