John Spencer was born John Speshock, Jr. in New York City, the only son of Mildred (Benzeroski), a homemaker and occasional waitress, and John Speshock, a truck driver. He grew up near Paterson, New Jersey, and left at age 16 to attend the Professional Children's School. In 1963, he landed a recurring role on The Patty Duke Show (1963). After that...