Aurelia Schwarzenegger, mother of action star Arnold Schwarzenegger, died Aug. 2 of heart failure in Graz, Austria. She was 76.Schwarzenegger was visiting the grave of her husband in nearby Weiz when she collapsed after a heart attack. Her death came just four days after her birthday. Schwarzenegger had lived quietly in Weiz, where her husband had been police chief. She was active in local wildlife preservation programs.