Robin Williams was born in Chicago.
I had quadruple bypass surgery a year ago had four aneurysm's two on the back side of my heart and two on the front..I was blessed they found this..and blessed we still have the medical system we have today..
I think he spent time in the Bay Area from 16 onward and honed his skills there and at Julliard briefly. Chicago has a long comedy tradition tho too.
http://www.imdb.com/name/nm0000245/bio