Eastwood was born on May 31, 1930 in San Francisco, California, the son of Clinton Eastwood (1906–1970) and Ruth (Runner) Wood (1909–2006).Ruth later took the surname of her second husband, John Belden Wood (1913–2004), whom she married after the death of Clinton Sr. Eastwood was nicknamed “Samson” by the hospital nurses because he weighed 11 pounds 6 ounces (5.2 kg) at birth.