Sean Patrick Astin was born February 25, 1971 in Santa Monica, California to John Astin (famous for playing Gomez on "Addams Family, The" (1964) among other things) and Patty Duke, both actors. He was their first child, but when Sean was two his brother Mackenzie was born (he also became an actor). They also have three older half brothers, David, Allen and Tom, who...