Saul Bellow

Saul Bellow was a Canadian-born American writer. For his literary contributions, Bellow was awarded the Pulitzer Prize, the Nobel Prize for Literature, and the National Medal of Arts.[2] He is the only writer to have won the National Book Award three times, and the only writer to have been nominated for it six times.

Source and more information: http://en.wikipedia.org/wiki/Saul_Bellow