What character from the animated television series "The Simpsons" is voiced by an American actor born in October 29, 1957, and is the mayor of Springfield?
Dan Castellaneta: Daniel Louis Castellaneta ( ; born October 29, 1957) is an American actor, voice actor, comedian and screenwriter. Dan Castellaneta:  Noted for his long-running role as Homer Simpson on the animated television series "The Simpsons", he also voices many other characters for the show, including Abraham "Grampa" Simpson, Barney Gumble, Krusty the Clown, Sideshow Mel, Groundskeeper Willie, Mayor Quimby and Hans Moleman. Mayor Quimby:  A member of the Democratic Party, Quimby is the mayor of Springfield, and is a composite parody of U.S. Senator Ted Kennedy and certain other members of the Kennedy family who have entered politics.
Mayor Quimby